ADMN 404 Long-term contracts Select one: a. are preferable to short-term contracts when there is a minimal need for cooperation. b. are preferable to vertical integration when it is not feasible to exchange hostages. c. generally result in lower prices than competitive bidding. d. achieve the same outcomes as vertical integration, but they incur higher bureaucratic costs. e. are a low-cost alternative to vertical integration when it is possible to build cooperative relationships with suppliers