47.In peas, a gene controls flower color such that R = purple and r = white. In an isolated pea patch, there are 64 purple flowers| and 36 white flowers. Assuming Hardy-Weinberg equilibrium, what proportion of the population is probably heterozygous for this trait? 
(A)48
(B) 0.60
(C) 0.24
(D)0.16
(E) 0.80