Which of the phrases given below the sentence should replace the phrase printed in bold type to make it grammatically correct? If the sentence is correct as it is, mark 'E' as the answer.
In addition to enhanced their reputations through strategic use of philanthropy, companies are sponsoring social initiatives to open new markets.
of enhancing their reputation
to having enhance their reputation
to enhancing their reputation
to have their reputation enhancing
No correction required
Correct answer is C
No explanation has been provided for this answer.