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
Not a barrier contraceptive among the following is 
Select and explain. 
A. Diaphragm, B. Condom, C. Today, D. Centchroman
D: Centchroman
Answer: D: Centchroman 
Explanation: Centchroman 

Non-hormonal contraceptive pill
It is a selective estrogen receptor modulator