Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best combines the pair of sentences given in each of the following questions.
He is very intelligent. He can solve all the problems in no time.
A. He is so an intelligent that he can solve all the problems in no time
B. He is so intelligent a boy that he can solve all the problems in no time
C. He is such intelligent that he can solve all the problems in no time
D. He is very intelligent that he can solve all the problems in no time