求教一道逻辑题

米样

A recent report determined that only five percent of all homeowners in Stockton have outfitted their homes with burglar alarms. However, of the Stockton homes that have been burglarized within the last five years, 25 percent were outfitted with such alarms during the burglaries. Clearly, Stockton homeowners who outfit their homes with burglar alarms are more likely to become victims of burglary than are those who do not.
The conclusion above depends on which of the following assumptions?

• 
  (A)The number of homes in Stockton that were burglarized within the last five years is greater than the number of homes equipped with burglar alarms.
  

(B)A significant number of the homes in Stockton that were burglarized within the last five years were burglarized more than once within this time period.

(C)Homes that have been burglarized within the last five years are more likely to be burglarized than are homes that have not been burglarized within the last five years.
correct

(D)Homeowners who outfit their homes with burglar alarms are less likely to become victims of burglary than are homeowners who have not installed such alarms.

(E)Homeowners in Stockton who have outfitted their homes with burglar alarms are more likely to be victims of burglary than homeowners with burglar alarms living in other similar cities.
正确答案是C，不是很明白，想和大家一起讨论~

米样

呃、、、格式怎么变成这样，大家多多包涵啊~~

米样

总觉得这个题目好熟悉，找到了，这是OG 12 cr78的变体，
78. A recent report determined that although only 3 percent of drivers on Maryland highways equipped their vehicles
with radar detectors, 33 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.(KEY)
(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.
(E) Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state
highways not covered in the report.

米样

茅塞顿开~~
擦泪，决心再啃OG！！！