Choose the correct option regarding retrovirus

Options

A. a RNA virus that can synthesis DNA during infection
B. a DNA virus that can synthesis RNA during infection
C. a ssDNA virus
D. a dsRNA virus.

Explanation

A retrovirus is a single-stranded RNA virus that stores its nucleic acid in the form of mRNA genome ( 5cap and 3poly A tail).
in most viruses, DNA is trasncribed into RNA, and then RNA is t ranslated into protein However, in retroviruses that RNA is reverse-transcribed into DNA, which is integrated into the host cells' genome (when it becomes a provirus) and then undergoes the usual transcription and transiational process to express the genes carried by the virus,
i.e., `RNArarrDNArarrRNArarr"Polypeptide" `.