In Order to Replicate Within a Host Cell, a Virus

In order to replicate within a host cell, a virus with a genome comprised of single-stranded positive-sense RNA

A) must use its genomic strand as a template to make copies of negative-sense RNA for packaging.
B) must use its genomic strand as a template to make copies of positive-sense RNA for packaging.
C) must first use its genomic strand as a template to make a negative-sense RNA, which then serves as a template to synthesize positive-sense RNA for packaging.
D) must first use its genomic strand as a template to make copies of DNA for packaging.