In a Population of Pepper Moths,the Frequency of the DD

In a population of pepper moths,the frequency of the DD genotype (dark-colored) is 0.25,and the frequency of the dd genotype (light-colored) is 0.25.What is the frequency of the Dd genotype (dark-colored) ?

A) 0.25
B) 0.5
C) 0.75
D) 0.1
E) 1.0