How Have Domesticated Varieties of Wild Grasses Lost Their Ability

How have domesticated varieties of wild grasses lost their ability to survive in Nature?

A) they can no longer reproduce without artificial pollination
B) through extensive inbreeding,they have lost all resistance to diseases
C) fruiting heads do not shatter and release seeds
D) pollen tubes only travel half way to the carpel
E) all of these are ways that wild grasses have lost their ability to survive in Nature