This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lower limb, Subject name: Anatomy
[{'content': 'A patient experiences paralysis of the muscle arising at the femur and contributes directly to the stability of knee. Which of the following muscle is involved ? \nSelect and explain. \nA. Semimembranosus, B. Vastus lateralis, C. Saorius, D. Biceps femoris', 'role': 'user'}, {'content': "Answer: B \nExplanation: All the muscles given contributes to the stability of the knee joint Only vastus lateralis arise from the femur remaining arise from the hip joint. Ref: Gray's Anatomy The Anatomical Basics of Clinical Practice 41 e pg 1362.", 'role': 'assistant'}]