Answer:
C. less than a gram
Explanation:
Overdoses with drugs vary from person to person while some person can overdose from what other person can only be feeling the effects of the drugs, this can be related to the effect that drugs have on the body, the capacity of the body to eliminate the drugs and other capacities that the body might have, but heroin is a very dangerous drug, and a dose smaller than a gram could provoque a lethal overdose on anyone.