In a Discussion of Drug-Drug Interactions, Which Would Be the Best

In a discussion of drug-drug interactions, which would be the best example of a beneficial inhibitory interaction?

A) Naloxone (Narcan) blocking morphine sulfate's actions
B) Antacids blocking the action of tetracycline (Sumycin)
C) Alcohol blocking the actions of opioids
D) Cholestyramine blocking the actions of antihypertensive drugs