Suppose That a Plant Has Two Genes That Are Linked

Suppose that a plant has two genes that are linked, with Ab on one homolog of a homologous pair of chromosomes and aB on the other homolog.What gametes could the plant produce if crossing-over occurred between these genes during meiosis?

A) Ab and aB only
B) AB and ab only
C) Aa and Bb only
D) Ab, aB, AB, and ab only
E) Ab, aB, AB, ab, Aa, and Bb only