Last year all refuse collected by Shelbyville cityservices was incinerated.  Thisincineration generated a large quantity of residue ash.  In order to reduce the amount of residue ashShelbyville generates this year to half of last year’s total, the city hasrevamped its collection program.  Thisyear city services will separate for recycling enough refuse to reduce thenumber of truckloads of refuse to be incinerated to half of last year’snumber.  

Which of the following is required for the revampedcollection program to achieve its aim?

A.      This year, no materials that city services could separate for recyclingwill be incinerated.

B.      Separating recyclable materials from materials to be incinerated will costShelbyville less than half what it cost last year to dispose of the residueash.

C.      Refuse collected by city services will contain a larger proportion ofrecyclable materials this year than it did last year.

D.     The refuse incinerated this year will generate no more residue ash pertruckload incinerated than did the refuse incinerated last year.

E.      The total quantity of refuse collected by Shelbyville city services this yearwill be no greater than that collected last year.

答案d，想请问e为什么不对