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
Foetus starts hearing by what time in intrauterine life: 
Select and explain. 
A. 14 weeks, B. 20 weeks, C. 32 weeks, D. 33 weeks
B: 20 weeks
Answer: B: 20 weeks 
Explanation: Formation of cochlea is complete by 20 weeks & a fetus can hear by 20 weeks.