Context: In a group of pea plants, some individuals have a tall stem and others have a short stem. In this group, the gene for the stem height trait has two alleles. The allele for a short stem (h) is recessive to the allele for a tall stem (H).
This Punnett square shows a cross between two pea plants.
What is the probability that a pea plant produced by this cross will be homozygous dominant for the stem height gene?
A. 1/4
B. 0/4
C. 4/4
D. 2/4
E. 3/4
Determine the correct option from the provided choices and reply with its corresponding letter.

A