Julie Buys an Auto from John When She Is 17

Julie buys an auto from John when she is 17.When she turns 21,Julie decides that she does not want the automobile.The age of majority in Julie's state is 18.Can Julie disaffirm this contract?

A) Yes; all contracts made while a minor may be disaffirmed.
B) Yes; Julie has a "reasonable time" after reaching majority to disaffirm this contract,and she acted within a "reasonable time."
C) No; Julie had a "reasonable time" within which to disaffirm the contract,but a "reasonable time" has passed.
D) No; to disaffirm the contract,Julie must have acted before she turned 18. Now it is too late.