This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Anatomy
Size of resting follicle : 
Select and explain. 
A. 0.2 mm, B. 0.02 mm, C. 2 mm, D. 20 mm
B: 0.02 mm
Answer: B: 0.02 mm 
Explanation: Size of resting follicle -0.02 mm Size of follicle just before ovulation -20 mm.