Consider the statements given below regarding contraception and answer as directed.
(I) Medical termination of pregnancy (MTP) during the first trimester is generally safe.
(II) Generally chances of conception are nil until mother breast-feeds the infant upto two years.
(III) Intrauterine devices like copper-T are effective contraceptives.
(IV) Contraception pills should be taken upto one week only after coitus to prevent conception.
Which two of the above statements are correct?