People with the Long Form of the D4DR Allele

People with the long form of the D4DR allele

A) Feel the effects of dopamine more strongly and are therefore likely to be extraverts
B) Feel the effects of dopamine less strongly and are therefore likely to be extraverts
C) Feel the effects of serotonin less strongly and are therefore likely to be extraverts
D) Feel the effects of serotonin more strongly and are therefore likely to be extraverts