In Relation to HIV Infection, What Was the Effect of Rinsing

In relation to HIV infection, what was the effect of rinsing contaminated needles with water?

A) Rinsing with water is effective at flushing out the HIV virus.
B) Several study participants were infected with HIV via needles during this study.
C) Most drug users use clean needles, so rinsing with water is not important.
D) Rinsing with water kills the HIV virus more effectively than does alcohol.