This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology, 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: In case of platelate disorder site of bleeding is usually skin and mucous membrane. where as in coagulation disorder bleeding will be from soft tissue,muscle,joint and deep sites. Platelet count is the investigation of choice in this case . Reference: GHAI Essential pediatrics, 8th edition', 'role': 'assistant'}]