（求助）不明白不明白，怎么都不明白

In December 1992 Tideville Shopping Mall repaired and improved the lighting in the mall's parking lots, and in 1993 car thefts and attempted car thefts from those lots decreased vy 76% from the previous year. Since potential car thieves are generally deterred by good lighting, the decrease can be attributed to these improvements/

下面哪一项最能支持以上论述

我选  Most of cars that were stolen from the mall in 1992 were stolen between 11 A,M and 4 A,M

可是正确答案是： In the town of Tideville, where the mall is located, the number of car thefts was about the same in 1993 as in 1992.

为什么？有人能跟我说下么？

我怎么想就是想不明白。

我晕了。我看成是p.m.和a.m.了。真是猪脑。

谢谢ls