We didn’t go by air because we didn’t have enough...

Câu hỏi: We didn’t go by air because we didn’t have enough money.

A  If we would go by air, we had enough money. 

B We would gone by air if we had enough money. 

C  We had had enough money if wewould have gone by air. 

D  We would have gone by air if we had had enough money.