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: Pediatrics
[{'content': 'Differential cyanosis is seen in – \nSelect and explain. \nA. TGV, B. TAPVC, C. PDA, D. VSD', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Differential cyanosis \n\nWhen one extremity is pink and the other extremity is cyanotic, it is referred to as differential cyanosis.\n\nCauses of differential cyanosis', 'role': 'assistant'}]