- APvu $II$
- BCla $I$
- ✓Rop
- DPst $I$
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$1.$ Viral $RNA$ replicates to form viral $DNA$ with the help of reverse transcriptase.
$2.$ The progeny viruses released in the blood attack other $T_H$ and destroy
$3.$ Viral $DNA$ gets incorporated into host cell's $DNA$ and produces virus particles
$4.$ Virus enters to macrophages

$(1)$ 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?