Arrange the following steps of the HIV replication cycle inside a host cell in the correct sequential order (from entry to exit): 1. Binding (Attachment) of gp120 to CD4 receptor and co-receptors (CCR5/CXCR4). 2. Reverse transcription of viral single-stranded RNA into double-stranded DNA. 3. Integration of viral DNA into the host cell genome by the integrase enzyme. 4. Protease cleavage of viral polyproteins to form mature, infectious virions. Select the correct option:

Options:

• A: 2-1-3-4
• B: 1-2-3-4
• C: 1-3-2-4
• D: 3-1-2-4

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