Figuer: -Based on the Figure from the Section on HIV Replication,why

Figuer:
-Based on the figure from the section on HIV replication,why could researchers use PCR to amplify viral DNA from the chimp Marilyn's tissues?

A) HIV uses DNA as its genetic material.
B) Some of the HIV will be stuck to the outside of a cell.
C) PCR uses a reverse transcriptase and can thus detect RNA.
D) PCR can amplify any genetic material.
E) HIV is converted to DNA and integrated into a cell's chromosome.