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: Gynaecology & Obstetrics
Ovarian senescence is described by all except 
Select and explain. 
A. Begins in utero within embryonic ovary., B. More rapid in late 30s and early 40s., C. Follicular activation is dependent on pituitary stimulation., D. Programmed oocyte atresia.
C: Follicular activation is dependent on pituitary stimulation.
Answer: C: Follicular activation is dependent on pituitary stimulation. 
Explanation: The follicular activation continues in a constant pattern that is independent of pituitary stimulation.