According to Adam Smith, the public interest was served by individuals pursuing their own self-interests.

Roland makes it a point to always offer help in technical areas in which he is skilled and knowledgeable. His subordinates trust his judgment, and form one of the most productive units in the company. What type of power is Roland exerting?

A) legitimate power
B) expert power
C) coercive power
D) referent power
E) reward power