Suppose You Cross a Pea Plant with Yellow, Smooth Seeds

Multiple Choice

Suppose you cross a pea plant with yellow, smooth seeds with one that has green, wrinkled seeds. You examine the seeds of 967 offspring and find that some have yellow, smooth seeds and some have yellow, wrinkled seeds, but no green seeds of either type show up. What is the genotype of the yellow-seeded parent? (Y = yellow, y = green; S = smooth, s = wrinkled)

A) YYSs
B) YYss
C) YYSS
D) YySS
E) YySs