Which Statement Best Describes the Current Understanding of the Evidence

Multiple Choice

Which statement best describes the current understanding of the evidence related to genes and alcoholism?

A) It is still uncertain if alcohol leads to genetic damage or genetic damage leads to alcoholism.
B) Three genes have been found that almost always predict alcoholism when they occur together.
C) Genes that cause the production of epinephrine and acetylcholine have a mild role in alcoholism.
D) Certain genes appear to provide protection against alcoholism.