According to Richard Chaykowski and Anil Verma, Why Will Canadian

According to Richard Chaykowski and Anil Verma, why will Canadian unions resist cooperative relationships with management?

A) Because they believe they will no longer be needed by workers
B) Because it could weaken their ability to oppose unwanted change in the future
C) Because it could weaken their ability to effect social and political change
D) All of the above