You Remove the Cotyledons from a Seed,but the Embryo Still

You remove the cotyledons from a seed,but the embryo still grows normally for the first few days.The most likely reason is that

A) the seed has its reserves in the endosperm.
B) the embryo has extra,hidden cotyledons.
C) the seed contains a fungal symbiont.
D) the embryo is digesting the seed coat to replace the missing cotyledons.
E) the seed contains digestible pigments in its roots.