Chọn một phương án đúng nhất A B C hoặc D để cho nghĩa của câu đó tương đương với câu dẫn David

If David passed the GCSE examination, he would have been allowed to take the entrance examination to the university.

If David had passed the GCSE examination, he would be allowed to take the entrance examination to the university.

If David had passed the GCSE examination, he would have been allowed to take the entrance examination to the university.

If David had passed the GCSE examination, he would have allowed to take the entrance examination to the university.