Which of the following is correct regarding AIDS causative agent HIV?

Which of the following is correct regarding AIDS causative agent HIV?
A HIV is unenveloped retrovirus.
B HIV does not escape but attacks the acquired immune response.
C HIV is enveloped virus containing one molecule of single-stranded RNA and one molecule of reverse transcriptase.
D HIV is enveloped virus that contains two identical molecules of single-stranded RNA and two molecules of reverse transcriptase.

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