Which sentence is wrong because it's not parallel?
A Grandad's tomato was not only the biggest one at the fair but also the winner of the blue ribbon.
B Not only was Grandad's tomato bigger than all others at the fair but also the winner of the blue ribbon.
C Not only was Grandad's tomato bigger than all others at the fair, but it also won the blue ribbon.
D Not only was Grandad's tomato the biggest one at the fair, but it was also the winner of the blue ribbon.