This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S., Subject name: Pediatrics
[{'content': 'Factor Xa is necessary for conversion of prothrombin to thrombin in which pathway? \nSelect and explain. \nA. Only in the extrinsic pathway, B. Only in the intrinsic pathway, C. As part of both extrinsic and intrinsic pathways, D. Only if the normal blood clotting cascade is inhibited', 'role': 'user'}, {'content': "Answer: C \nExplanation: c. As part of both extrinsic and intrinsic pathways(Ref: Nelson's 20/e p, Ghai 8/e p)Factor Xa is necessary for conversion of prothrombin to thrombin in the common pathway, that means as as part of both extrinsic and intrinsic pathways.", 'role': 'assistant'}]