<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 30-year-old man is brought to the emergency department with complaints of fevers to 39.0C 102.2F and diarrhea for the past 12 hours. There is no history of headaches, vomiting, or loss of consciousness. The past medical history is unobtainable because the patient recently immigrated from abroad and has a language barrier, but his wife says that her husband had a motor vehicle accident when he was a teenager that required emergent surgery. He is transferred to the ICU after a few hours in the ED due to dyspnea, cyanosis, and hemodynamic collapse. There are no signs of a meningeal infection. The blood pressure is 7030 mm Hg at the time of transfer. A chest X-ray at the time of admission shows interstitial infiltrates without homogeneous opacities. The initial laboratory results reveal metabolic acidosis, leukopenia with a count of 2000mm3, thrombocytopenia 15,000mm3, and a coagulation profile suggesting disseminated intravascular coagulation. A peripheral smear is performed as shown in the accompanying image. Despite ventilatory support, administration of intravenous fluids, antibiotics, and vasopressor agents, the patient dies the next day. The gram stain from the autopsy specimen of his lungs reveals gram-positive, lancet-shaped diplococci occurring singly and in chains. Which of the following organisms is the most likely cause for the patients condition?? A: Staphylococcus aureus, B: Streptococcus pyogene, C: Streptococcus pneumoniae, D: Neisseria meningitidis, E: Non-typeable H. influenzae,  <response>: This is a question about identifying the most likely causative organism in a patient with severe sepsis leading to death. The key findings in the stem are:- Fevers and diarrhea in a 30-year-old man- No headache, vomiting, or LOC changes arguing against meningitis - Past motor vehicle accident and surgery no other PMHx available due to language barrier- Progressed to dyspnea, cyanosis, shock requiring ICU care- No signs of meningeal infection- Metabolic acidosis, leukopenia, thrombocytopenia, DIC on labs - Peripheral smear showed diploccoci- Gram positive lancet-shaped diplococci in chains on autopsy lung specimen gram stainBased on the peripheral smear and lung autopsy findings showing gram positive lancet-shaped diplococci in chains, the most likely organism is Streptococcus pneumoniae. The other organisms listed can have these morphologies, but the clinical picture is most consistent with severe pneumococcal sepsis. S. aureus and S. pyogenes are less likely to present with severe respiratory symptoms. N. meningitidis is unlikely given the lack of meningeal signs. Non-typeable H. influenzae lacks the classic lancet-shaped diplococci morphology.C: Streptococcus pneumoniae 