<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 73-year-old male is brought into the ED unconscious with cold, clammy skin. His blood pressure is 65 over palpable. There is no signs of blood loss. You recognize the patient is in acute shock and blood is drawn for investigation as resuscitation is initiated. Which of the following might you expect in your laboratory investigation for this patient?? A: Increased arterial pH, B: Increased serum bicarbonate, C: Increased serum ketones, D: Decreased hemoglobin, E: Increased blood lactate,  <response>: This is a patient in shock with no signs of blood loss. The description of cold, clammy skin and low blood pressure indicates the patient is likely in shock due to a problem with circulationperfusion. The lab values that would indicate poor perfusion and anaerobic metabolism are increased serum lactate and metabolic acidosis decreased pH and bicarbonate. Ketones may be elevated in diabetic ketoacidosis but this is not suggested in the stem. Hemoglobin would not be expected to change acutely in this scenario.E: Increased blood lactate 