While Not the Form of Alcohol Used as a Beverage,why

Multiple Choice

While not the form of alcohol used as a beverage,why might someone unintentionally be exposed methanol?

A) Alcoholic beverage producers are not required to test for methanol, which may be accidentally synthesized during the production process.
B) Methanol is known to contaminate drinking water.
C) He drank poorly distilled alcohol, which contained amounts of methanol.
D) He was having a massage and rubbing alcohol was used.