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': 'Which of the following enzyme deficiency is the most common cause of pseudohermaphroditism in a female child? \nSelect and explain. \nA. 3 - hydroxylase deficiency, B. 11 - hydroxylase deficiency, C. 17 - hydroxylase deficiency, D. 21- hydroxylase deficiency', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Most common cause of female pseudohermaphroditism is congenital adrenal hyperplasia mostly caused by deficiency of the enzyme 21 hydroxylase. Due to this enzyme deficiency, there is deficient production of adrenal coisol and aldosterone and overproduction of adrenal androgens.', 'role': 'assistant'}]