Which of the Following Was NOT Cited in the Text

Which of the following was NOT cited in the text as evidence that heredity influences alcohol use?

A) Children whose parents abuse alcohol have a lower tolerance for multiple alcoholic drinks taken over a short period of time.
B) Boys who are impulsive and fearless at age 6 are more likely to drink as teenagers.
C) Having an identical twin with alcohol use disorder puts one at increased risk for alcohol problems.
D) Researchers have found certain genes to be more common among people predisposed to alcohol use disorder.