The correct option is B ssRNA
Usually plant viruses have RNA as genetic material and animal viruses are DNA viruses. AIDS virus is an animal virus having RNA as genetic material. HIV is one of a group of atypical viruses called as retroviruses that maintain their genetic information in the form of ribonucleic acid (RNA). Through the use of an enzyme known as reverse transcriptase, HIV and other retroviruses are capable of producing deoxyribonucleic acid (DNA) from RNA, whereas most cells carry out the opposite process, transcribing the genetic material of DNA into RNA. The activity of the enzyme enables the genetic information of HIV to become integrated permanently into the genome (chromosomes) of a host cell.