Answer:
A) Because Joe and Mike work for un-affiliated broker/dealers, they are not permitted to share or split commissions, making this arrangement un-acceptable.
Step-by-step explanation:
Even though Joe and Mike are friends and know each other for a long time, in the real world where money has an almost divine status, they must follow the rules. Commissions can only be split between agents that work for the same broker-dealer firm and are registered to work in the same state.
Since Joe and Mike work for unaffiliated broker-dealers, they cannot share clients or split commissions. Following the rules will not only help them professionally, but probably will help their friendship.