THE BOY WAS NOT INTELLIGENT ENOUGH TO HAVE SOLVED SUCH COMPLEX PRO...

72. The boy was not intelligent enough to have solved such complex problems alone.

A. The complex problems couldnt be solved because the boy was so stupid.

B. The boy was not intelligent but he managed to solve such complex problems.

C. The boy, though quite intelligent, couldnt solve the complex problems.

D. The boy together with someone else solved the complex problems.