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
Oral contraceptives act by : 
Select and explain. 
A. Increasing LH, B. Increasing FSH, C. Decreasing LH and FSH, D. Decreasing ACTH and SRF
C: Decreasing LH and FSH
Answer: C: Decreasing LH and FSH 
Explanation: Decreasing LH and FSH