Which of the Following Best Describes the Relationship Between Genotype

Which of the following best describes the relationship between genotype for the serotonin transporter gene and depression?

A) People with two alleles are more prone to depression than those with one or more long alleles.
B) People with two long alleles are more prone to depression than those with one of more alleles.
C) People with two alleles show a stronger association between life stress and depression than those with two long alleles.
D) There is no significant relationship between serotonin transporter genotype and vulnerability to depression.