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: ENT
[{'content': 'Foetus starts hearing by what time in intrauterine life: \nSelect and explain. \nA. 14 weeks, B. 20 weeks, C. 32 weeks, D. 33 weeks', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Formation of cochlea is complete by 20 weeks & a fetus can hear by 20 weeks.', 'role': 'assistant'}]