The ability of a person to roll their tongue is controlled by a single gene with two alleles. About 65% of people have the dominant allele, and can therefore roll their tongue. Stephanie cannot roll her tongue. Without yet knowing her mate, what is the probability that Stephanie's first child will be able to roll their tongue? (Assume this gene is in Hardy-Weinberg equilibrium in this population.)
A) 0.41
B) 0.50
C) 0.65
D) 0.88
please show work!!