Which of the following is a reason that it is harder to program an arm$$s length channel system and thus align the intermediaries with the producer$$s vision of what roles each member must play?

Group of answer choices

a$)$ The producer$$s product is only a small portion of the intermediary$$s portfolio.

b$)$ The producer$$s product is highly specialized.

c$)$ The producer$$s product offers high margins to channel members.

d$)$ The channel intermediary carries products that are complementary to the supplier$$s$.$