Consider the statements given below regarding contraception and answer as directed thereafter.
(a) Medical Termination of Pregnancy (MTP) during first trimester is generally safe.
(b) Generally, chances of conception are nil until the mother breast-feeds 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 of the above statements is/are correct?