Pro-Teet Insurance Company has recently been paying out more on car-theft claims than it expected. Cars with special antitheft devices or alarm systems are much less likely to be stolen than are other cars. Consequently Pro-Teet, as part of an effort to reduce its annual payouts, will offer a discount to holders of car-theft policies if their cars have antitheft devices or alarm systems. Which of the following, if true, provides the strongest indication that the plan is likely to achieve its goal? ['The decrease in the risk of car theft conferred by having a car alarm is greatest when only a few cars hav. e such alarms.', 'Currently, Pro-Teet cannot legally raise the premiums it charges for a given amount of insurance against car theft.', 'In one or two years, the discount that Pro-Teet is offering will amount to more than the cost of buying certain highly effective antitheft devices.', 'The amount Pro-Teet has been paying out on car theft claims has been greater for some models of car than for others.']