If a Pollen Grain Lands on a Stigma That Expresses

If a pollen grain lands on a stigma that expresses the same S-gene alleles as the pollen grain itself, what would happen?

A) Pollen would not germinate, or if it did the tubes would grow slowly and die before reaching the ovules.
B) Pollen would germinate quickly and the pollen tubes would grow rapidly to the ovules.
C) Pollen would germinate and the pollen tubes rapidly reach the ovules, but the sperm nuclei would fail to fuse with the egg cells.
D) Fertilization would occur, but the fruit would abort.