When Assessing High-Risk Behaviors, Which Question Specifically Identifies a Blood-Related

When assessing high-risk behaviors, which question specifically identifies a blood-related risk for a sexually transmitted infection?

A) "Have you ever received donor semen, eggs, or transplanted tissue?"
B) "Have you ever exchanged sex for drugs, money, or shelter?"
C) "How do you protect yourself from HIV and sexually transmitted infections?"
D) "Have you ever injected drugs using shared equipment?"