Why Are Ketones Less Reactive Than Aldehydes

Multiple Choice

Why are ketones less reactive than aldehydes?

A) Ketones are more sterically hindered.
B) Ketones are less electron deficient due to donation from the two alkyl groups.
C) The statement is false; ketones are more reactive than aldehydes.
D) Both (a) Ketones are more sterically hindered and (b) Ketones are less electron deficient due to donation from the two alkyl groups.