Mark the letter A, B, C, or D on...

Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate sentence that sentence that best combines each pair of sentences in the following questions
The sooner we solve this problem, the better it will be for all concerned.

A. If all concerned are better, we can solve this problem soon.

B. It would be better for all concerned if we can solve this problem soon.

C. If we could solve this problem soon, it would be better for all concerned.

D. If we can solve this problem soon, it will be better for all concerned.