Suppose 64% of the Individuals in a Remote Mountain Village

Suppose 64% of the individuals in a remote mountain village can taste phenylthiocarbamide (PTC) and must, therefore, have at least one copy of the dominant PTC taster allele. If this population conforms to Hardy-Weinberg equilibrium for this gene, what percent of the population must be heterozygous for this trait?

A) 16%
B) 32%
C) 40%
D) 48%