The Major Weakness to Arm's-Length Relationships Is

The major weakness to Arm's-Length relationships is:

A) the failure of one of the parties will result in the failure of the other party
B) the large amount of capital needed to form the relationship
C) opportunistic behavior on the part of one of the parties
D) they force the parties into a strongly interdependent relationship
E) they explicitly define the relationships to the involved channel members