<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 12-year-old boy who recently immigrated from Namibia is being evaluated for exertional shortness of breath and joint pain for the past month. His mother reports that he used to play soccer but now is unable to finish a game before he runs out of air or begins to complain of knee pain. He was a good student but his grades have recently been declining over the past few months. The mother recalls that he had a sore throat and didnt go to school for 3 days a few months ago. He had chickenpox at the age of 5 and suffers from recurrent rhinitis. He is currently taking over-the-counter multivitamins. His blood pressure is 11090 mm Hg, pulse rate is 55min, and respiratory rate is 12min. On physical examination, subcutaneous nodules are noted on his elbows bilaterally. On cardiac auscultation, a holosystolic murmur is heard over the mitral area that is localized. Lab work shows:Hemoglobin 12.9 gdLHematocrit 37.7Leukocyte count 5,500mm3Neutrophils 65Lymphocytes 30Monocytes 5Mean corpuscular volume 82.2 fLPlatelet count 139,000mm3Erythrocyte sedimentation rate 35 mmhC-reactive protein 14 mgdLAntistreptolysin O ASO 400 IU normal range: 200 IUWhich is the mechanism behind the cause of this boys symptoms?? A: Type I hypersensitivity reaction, B: Type II hypersensitivity reaction, C: Type III hypersensitivity reaction, D: Type IV hypersensitivity reaction, E: Congenital immunodeficiency,  <response>: This is a clinical vignette describing a 12-year-old boy with recent onset of exertional shortness of breath, joint pain, declining school performance, and physical exam findings of a heart murmur and subcutaneous nodules. The lab results show an elevated erythrocyte sedimentation rate, C-reactive protein, and antistreptolysin O titer. This clinical presentation is most consistent with acute rheumatic fever following a recent streptococcal pharyngitis infection. The joint pain, heart murmur, and subcutaneous nodules point towards an autoimmune reaction caused by molecular mimicry between streptococcal antigens and host tissues. The elevated inflammatory markers and ASO titer confirm a preceding streptococcal infection. Therefore, this is an example of a type II hypersensitivity reaction mediated by antibodies against the patients own tissues.B: Type II hypersensitivity reaction 