the owners of gas stations in bigtown are trying to set up a cartel that will raise the price of gasoline. which of the following will increase the chances that the cartel will fail due to cheating by the owners? a all bigtown gas stations face the same costs. b the firms are currently producing as much as they can. c there are only a few gas stations in bigtown. d the stations vary in terms of the services that they provide. e all bigtown gas stations have the same number of gasoline pumps.