This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Contraceptives, Subject name: Gynaecology & Obstetrics
Gossypol is : 
Select and explain. 
A. New drug for fibroids, B. New drug for endometriosis, C. Injectable contraception, D. Contraceptive pills for males
D: Contraceptive pills for males
Answer: D: Contraceptive pills for males 
Explanation: Gossypol: Contains Disequiterpene aldehyde,yellow pigment isolated from cottonseed oil Produces its effect by inhibiting spermatogenesis, decreasing epididymal sperm motility, and affecting the conversion of proacrosin to acrosin. It is administered orally 10-20 mg daily for 3 months and thereafter 20 mg twice weekly. The side effects such as weakness, hypokalaemic paralysis and permanent sterility