This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Demography and Family Planning, Subject name: Social & Preventive Medicine
[{'content': 'Which can be used as an Emergency contraceptive? \nSelect and explain. \nA. DMPA, B. Spermicidal jelly, C. Copper-T, D. Today', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans: c (Copper-T) Ref: Park, 19th ed, p. 394Copper-T is an effective post coital contraceptive, if inserted within 3-5 days of unprotected intercourse.DMPA- is an injectable contraceptive containing a progesterone. It acts by suppressing ovulation and it has no role in emergency contraception.Today- is a type of barrier contraception. It is a vaginal sponge saturated with spermicide nonoxynol-9. It cannot be used in emergency contraception.Spermicidal jelly- is chemical method of barrier contraception.', 'role': 'assistant'}]