​Which of the following can a firm use to reduce competition in the market?

A) ​Locking in customers to long term contracts
B) Seek an exclusive government contract
C) Acquire patents
D) ​All the above

The value of a group membership that was once very satisfying drops down below your comparison level.According to social exchange theory,you will

A) terminate your membership.
B) not terminate your membership until it drops below your CLalt.
C) attempt to improve the group.
D) continue as a member,even if another more satisfying one is available.