Which Alternative Correctly Arranges Drugs in Order of Increasing Safety $\rightarrow$

Multiple Choice

Which alternative correctly arranges drugs in order of increasing safety ratio

A) alcohol $\rightarrow$ heroin $\rightarrow$ marijuana
B) alcohol $\rightarrow$ marijuana $\rightarrow$ heroin
C) heroin $\rightarrow$ marijuana $\rightarrow$ alcohol
D) heroin $\rightarrow$ alcohol $\rightarrow$ marijuana