From a Pharmacological Point of View,a Drug Is Defined as __________

From a pharmacological point of view,a drug is defined as __________.

A) any substance,other than food,that chemically alters the structure or function of a living organism
B) any substance prescribed by a physician or manufactured expressly to relieve pain or to treat and prevent disease
C) any substance that alters physiological functioning so that pleasure is perceived
D) any substance that is prepared from synthetic components that have a chemical and not an organic basis
E) any chemical substance that affects physiological functions,mood,perception,or consciousness and has the potential for misuse