Thomas Is an Executive in a Firm's IT Department

 Thomas is an executive in a firm's IT department. He has immense knowledge in IT and has come up with many technological innovations, which had helped the organization to perform its activities more efficiently. Moreover, he has the ability to solve all types of issues that arise on a daily basis with relative ease. As a result, the individuals in the organization have developed great respect for him. Identify the kind of power demonstrated by Thomas.

A) Referent power
B) Reward power
C) Expert power
D) Coercive power