Context: In a group of pea plants, some individuals have green pods and others have yellow pods. In this group, the gene for the pod color trait has two alleles. The allele D is for green pods, and the allele d is for yellow pods.
A certain pea plant from this group has green pods. This plant has one allele for green pods and one allele for yellow pods.
Based on this information, what is this pea plant's genotype for the pod color gene?
A. Dd
B. green pods
Select the correct answer from the provided options and reply with the letter associated with it.

A