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 by 76 percent from the previous year. Since potential car thieves are generally deterred by good lighting, the decrease can be attributed to these improvements.

Which of the following, if true, most helps to strengthen the argument above?

(A) Both in 1992 and in 1993, most of the cars stolen from the mall’s parking lots were relatively new and expensive luxury models.

(B) Most of the cars that were stolen from the mall in 1992 were stolen between 11 A. M.and 4 P.M.

(C) Tideville Shopping Mall is one of only three shopping malls in the Tideville area.

(D) In the town of Tideville, where the mall is located, the number of car thefts was about the same in 1993 as in 1992.

(E) In 1993 the number of security officers patrolling the mall’s parking lots at night was doubled.

答案选E，我可以理解。但自己做的时候选了B,求问为什么不对？