Context: In a group of rainbow trout, some individuals have a greenish-brown body and others have a blue body. In this group, the gene for the body color trait has two alleles. The allele for a blue body (b) is recessive to the allele for a greenish-brown body (B).
This Punnett square shows a cross between two rainbow trout.
What is the probability that a rainbow trout produced by this cross will be homozygous recessive for the body color gene?
A. 0/4
B. 3/4
C. 4/4
D. 2/4
E. 1/4
Answer with the option's letter from the given choices directly.

A