Choline and Methionine Are Both Sources of Methyl Groups for Transmethylation

Choline and methionine are both sources of methyl groups for transmethylation but

A) only methionine needs to be activated.
B) the activation of methionine is via oxidation while that of choline is not.
C) the product of activation of choline transfers its methyl group only to homocysteine while activated methionine has many acceptors.
D) in their appropriate forms, all three methyls of choline can be transferred to a methyl acceptor while methionine can transfer only one.
E) the activation of choline requires tetrahydrofolate while that of methionine requires ATP.