This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Gynaecology & Obstetrics
[{'content': 'Pregnancy is contraindicated in \nSelect and explain. \nA. Hea transplantation, B. Mechanical valves, C. Pulmonary aerial hypeension, D. Marfan syndrome without aoic dilatation', 'role': 'user'}, {'content': "Answer: C \nExplanation: WHO 4 Category: Very high risk of maternal moality or severe morbidity; Pregnancy contraindicated and termination discussedPulmonary aerial hypeensionSevere systemic ventricular dysfunction Previous peripaum cardiomyopathy with any residual impairment of left ventricular functionSevere left hea obstructionMarfan syndrome with aoa dilated > 40mm(Ref: William's Obstetrics; 25th edition)", 'role': 'assistant'}]