Context: In a group of fruit flies, some individuals have red eyes and others have brown eyes. In this group, the gene for the eye color trait has two alleles. The allele for red eyes (E) is dominant over the allele for brown eyes (e).
This Punnett square shows a cross between two fruit flies.
What is the probability that a fruit fly produced by this cross will be homozygous dominant for the eye color gene?
A. 2/4
B. 0/4
C. 4/4
D. 1/4
E. 3/4
Select the correct answer from the provided options and reply with the letter associated with it.

A