India is a country with at least fifty major regional languages , of whom fourteen have offical recognition. (A) of whom fourteen have official recognition (B)fourteen that have official recognition (C) fourteen of which are officially recognized (D) fourteen that are officially recognized. (E) among whom fourteen have official recognition.
The answer is C. Can anybody tell me why "that officially recognized is better than " have official recognition" ? "fourteen of which" is between than "fourteen" alone?