The phrase“substance abuse”is often used instead of“drug abuse”to make clear that substances such as alcohol and tobacco can be just as harmfully misused as heroin and cocaine． “Substance abuse”is preferable to“drug abuse”in that________.
选项：

A:substances can alter our bodily or mental functioning if illegally used
B:“drug abuse”is only related to a limited number or drug takers
C:alcohol and tobacco are as fatal as heroin and cocaine
D:many substances other than heroin or cocaine can also be poisonous