Which of these sentences correctly connects a dependent clause to an independent clause?

A)
My pumpkin didn't win the prize this year at the Harvest Festival because I did not fertilize it with royal jelly like the winner did.

B)
I did not fertilize my pumpkin with royal jelly like the winner did, and it did not win the prize this year at the Harvest Festival.

C)
My pumpkin didn't win the prize this year at the Harvest Festival, because I did not fertilize it with royal jelly like the winner did.

D)
All of them