Which of the following is common among condoms and a diaphragm?

Consider the statements given below and answer as directed thereafter.

(A) Medical termination of pregnancy (MTP) during the first trimester is generally safe.
(B) Generally chances of contraception are nil until the mother breastfeeds the infant up to two years.
(C) Intrauterine devices like copper-T are effective contraceptives.
(D) Contraception pills may be taken up to one week after coitus to prevent conception.

Which two of the above statements are correct?