另一道老太婆题，麻烦，快考了

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.