Arrange the Process of HIV Invasion in the Proper Sequence

Multiple Choice

Arrange the process of HIV invasion in the proper sequence.

-Step 1

A) HIV attaches to CD4 receptor sites on T-helper cells.
B) Opportunistic infection occurs.
C) Infected cell replicates itself millions of times.
D) T-helper cells fail to activate phagocytes.
E) Immune system is unable to respond effectively.