Opioids Such as Heroin Have Enormous Reward Value to the Brain

Multiple Choice

Opioids such as heroin have enormous reward value to the brain because they and .

A) activate dopamine receptors; bind with opiate receptors
B) inhibit dopamine receptors; bind with opiate receptors
C) activate dopamine receptors; block opiate receptors
D) inhibit dopamine receptors; block opiate receptors