For the Purpose of This Book, All Chemical Substances Will

For the purpose of this book, all chemical substances will be considered as 'drugs' if they are__________ ___________ for social and recreational purposes to __________ mood and conscious states, opposed to medicinal use such as treatment of physical and psychological disorders.

A) involuntarily consumed, alter
B) voluntarily consumed, maintain
C) voluntarily consumed, alter
D) involuntarily consumed, maintain