This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pediatrics
[{'content': 'Congenital adrenal hyperplasia, most commonly presents as: \nSelect and explain. \nA. Male pseudohermaphroditism, B. Female pseudohermaphroditism, C. True hermaphroditism, D. 46,XY intersex', 'role': 'user'}, {'content': 'Answer: B \nExplanation: b. Female pseudohermaphrodites(Ref: Nelson 20/e p 2714-2718)Note: Male pseudohermaphrodite is now called 46,XY DSD, while female - 46 XX DSD;So female pseudohermaphrodite is genotypically female (46,XX), whose external genitalia looks like that of a male;In CAH due to 21-hydroxylase deficiency, females have ambiguous genitalia, while males have normal genitalia', 'role': 'assistant'}]