Which Alternative Correctly Orders Opioids from Least to Most Addictive $\rightarrow$

Multiple Choice

Which alternative correctly orders opioids from least to most addictive

A) heroin $\rightarrow$ morphine $\rightarrow$ opium
B) morphine $\rightarrow$ heroin $\rightarrow$ opium
C) morphine $\rightarrow$ opium $\rightarrow$ heroin
D) opium $\rightarrow$ morphine $\rightarrow$ heroin