You Gave Helen an Assignment Specifying Exactly How It Had

Multiple Choice

You gave Helen an assignment specifying exactly how it had to be done. She ignored your directives and the assignment doesn't meet the customer's request. This is not the first time this has happened.
Identify the relevant type of power to use it this situation to get the best results.

A) coercive
B) connection
C) reward or legitimate
D) referent
E) information or expert