This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': 'A 10 year old boy presents with mucosal bleeding of 1 week duration. The investigation of choice that will be most useful in him is - \nSelect and explain. \nA. Prothrombin time, B. Clotting time, C. Paial thromboplastin time, D. Platelet count', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Platelete count o Bleeding from mucosal surface suggests thrombocytopenia or defect in platelet function. o First do platelet count, if there is thrombocytopenia, fuher investigation will be required.", 'role': 'assistant'}]