Ecosystem — BIOLOGY STD 12 Science — Question

If you cross your unknown plant with one of the plants whose genotype is listed below, you will be able to determine your unknown's genotype. With which plant would you cross it?

$(1)$ medical termination of pregnancy $(MTP)$ during first trimester is generally safe

$(2)$ generally chances of conception are nil until mother breast feeds the infant upto two years

$(3)$ intrauterine devices like copper $T$ are effective contraceptives

$(4)$ contraception pills may be taken upto one week after coitus to prevent conception.

Which two of the above statements are correct?