Which of the following is true about the Gp-9 gene in fire ants?

A) Monogyne colonies all have a single allele at the gene locus and one genotype.
B) The gene codes for a regulatory protein that affects reproduction.
C) The gene has three alleles and colonies possess four genotypes.
D) The gene codes for AVP1 and regulates aggression.
E) The gene codes for a "socially responsive" protein that regulates the number of queens in a colony.