Cotyledons and Endosperm Both Provide Nutrition

Cotyledons and endosperm both provide nutrition. What is the difference between them?

A) Endosperm provides nutrition for the developing embryo; cotyledons provide nutrition for the young seedling.
B) Endosperm is always photosynthetic; cotyledons are usually not.
C) Endosperm is found only in monocots; cotyledons are found only in dicots.
D) Cotyledons are found only in flowering plants; endosperm is found only in young ferns.
E) Cotyledons provide nutrition for the developing embryo; endosperm provides nutrition for the young seedling.