Recall that in peas, green seed color is recessive to yellow. A farmer plans to have a garden with true-breeding pea plants that produce green seeds. However, he only has available yellow F, seeds that were obtained by crossing green and yellow varieties. If he allows plants that arise from these seeds to self-fertilize, what proportion of the offspring could he use to initiate the true-breeding pea garden?

a. 1/2
b. 1/3
c. 1/4
d. 3/4
e. None of them