Suppose That You Are a Genetic Counselor,and a Couple Seeks

Suppose that you are a genetic counselor,and a couple seeks your advice about BHT tasting (people who can taste BHT in processed food are recessive homozygotes for the "taster" allele and nontasters are homozygous dominant or heterozygous for the "nontaster" allele) .Both prospective parents are nontasters,but a careful analysis of the husband's pedigree reveals that he is a carrier of the taster allele.The two alleles are in Hardy-Weinberg equilibrium,and the proportion of BHT tasters in the population is 16 percent.What is the probability that the couple's first child will be a nontaster of BHT?

A) 0.0
B) 0.32
C) 0.81
D) 0.86
E) 1.0