In Mendel's Pea Plants, Yellow Seeds Are Dominant to Green

In Mendel's pea plants, yellow seeds are dominant to green seeds. Purple flowers are dominant to white flowers. Use Y and y for the seed color alleles, and P and p for the flower color alleles. Flower color and seed color assort independently. If a YyPp plant is crossed to a Yypp plant, what is the probability that the resulting plant will have the genotype Yypp? (Hint: Determine two separate probabilities, and use the rule of multiplication.)

A) 1/2
B) 1/8
C) 1/32
D) 1/16
E) 1/4