This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lower Limb and Foot & Ankle Problems, Subject name: Orthopaedics
[{'content': 'Spot diagnosis for foot deformity? \nSelect and explain. \nA. CTEV, B. Congenital vertical talus, C. Rocker bottom foot, D. Pes Cavus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) Rocker bottom footThe image shows convexity at the sole of the foot sole. In CTEV the bilateral feet and toes point inwards facing each other.', 'role': 'assistant'}]