Beano Is a Product Containing an Enzyme That Breaks Down

Beano is a product containing an enzyme that breaks down complex carbohydrates in beans and other vegetables,thereby reducing gas production when these foods are eaten.Why would humans need to take Beano to avoid gas?

A) If they don't break down the complex carbohydrates, bacteria in their colon will.
B) If they don't break down the complex carbohydrates, bacteria in their small intestine will.
C) Complex carbohydrates react with acid in the stomach to produce gas.
D) Complex carbohydrates react with saliva in the mouth to produce gas.
E) Complex carbohydrates cannot be broken down and cause constipation.