Which of the Following, If True, Would Most Strengthen Dexterity's

Which of the following, if True, would most strengthen Dexterity's case in maintaining Ashe's current contract rate?

A) Monahan has never directly observed Ashe's performance in presenting a workshop.
B) As a contract worker, Ashe does not receive medical or retirement benefits.
C) Monahan has few applications from other qualified instructors in the area.
D) Dexterity uses a single-rate system for contingent workers.
E) There is no other agency in Canal City with whom Ashe could contract to provide similar workshops.