A. The costs of selling cocaine include the risk of being arrested and imprisoned. 1Whyr is a ten year sentence not twice as strong a deterrent as a fiveyear sentence? it'llhj.r does one chance in five of being imprisoned for 1D years translate into less than two years' imprisonment? Is a cocaine seller likelyr to use a high or a low discount rate in deciding on the snbj active cost of possible imprisonment? Why is the threat of imprisonment more effective in deterring some people than others