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: Anatomy
[{'content': 'Which of the following muscle cause hip extension and knee flexion ? \nSelect and explain. \nA. Semitendinosus, B. Gastrosoleus, C. Psoas major, D. Tensor Fascia lata', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is'a' i.e.. SemitendinosusSemitendinosus is hamstring muscle.Causes flexion at knee & extension at hip.", 'role': 'assistant'}]