Strategies to fight the AIDS virus include drugs that mimic nucleotides, ... ...

Strategies to fight the AIDS virus include drugs that mimic nucleotides, called nucleotide analogs. Reverse transcriptase incorporates these analogs into the newly formed viral DNA strand. The host cell cannot interpret the DNA correctly, so the virus does not propagate. Unfortunately, this therapy only works for a short time in infected individuals, probably because:
(A) the outer protein coat of the virus mutates so it is no longer recognized by the immune system.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in 07. Viruses