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': 'True regarding the hip joint is - \nSelect and explain. \nA. Medial rotation and abduction is caused by gluteus medius and gluteus minimus, B. Medial rotation and adduction is caused by gluteus medius and gluteus minimus, C. Gluteus maximus is the chief flexor of hip, D. Hyperrextension of hip is prevented by capsular thickening', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Abduction and medial rotation is caused by gluteus medius and minimus.', 'role': 'assistant'}]