16. A recent report determined that although only three percent of drivers on Maryland highways equipped their vehicles with radar detectors, thirty-three percent of all vehicles ticketed for exceeding the speed limit were equipped with them. Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.
The conclusion drawn above depends on which of the following assumptions?
(A) Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not.
(B) Drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed.
(C) The number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with radar detectors.
(D) Many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report.（B）
(E) Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered in the report.
为什么选B不选D？B和D有什么区别？
按D所说， vehicles that were ticketed for exceeding the speed limit were ticketed more than once ，那么，不也说明了drivers ticketed for exceeding the speed limit are more likely to exceed the speed limit（B的意思）。 | 
