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: Medicine
[{'content': 'A child presented with headache, dizziness, intermittent claudication with occassional dyspnoea. The most probable diagnosis in : \nSelect and explain. \nA. ASD, B. PDA, C. TOF, D. Coarctatation of aoa', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Answer is D (Coarctation of aoa) Tht child is prc.sentinwith characteristic features of coarctution of aoa.', 'role': 'assistant'}]