United Lumber will use trees from its forests for two products. The tree trunks will be used for lumber and the branches converted into wood chips to make fiberboard. The cost of this conversion would be the same whether done at the logging site, where the trees are debranched, or at United's factory. However, wood chips occupy less than half the volume of the branches from which they are made.
The information given, if accurate, most strongly supports which of the following?
(A) Converting the branches into wood chips at the logging site would require transporting a fully assembled wood-chipping machine to and from the site.
(B) It would be more economical to debranch the trees at the factory where the fiberboard is manufactured.
(C) The debranching of trees and the conversion of the branches into chips are the only stages in the processing of branches that it would be in United's economic advantage to perform at the logging site.
(D) Transportation costs from the logging site to the factory that are determined by volume of cargo would be lower if the conversion into chips is done at the logging site rather than at the factory.
(E) In the wood-processing industry, branches are used only for the production of wood chips for fiberboard.
期待各位大牛小牛的解答！！！
答案是D
我是这样理解的。是说tree trunk 用来做lumber,branches用来做chips
在logging site和factory用的成本是一样的
wood chips occupy less than half the volume of the branches from which they are made.说明branch做成wood chips后体积小一半多。而体积越小运费越小（D选项）。说明在
方案一 在loggin site做好运到factory(费用为成本+运费一（less than half the volme)）
方案二 从logging site运到factory再做成chips（费用为成本+运费二(the whole volume))
中显然一比二省钱。选D 我是这样理解的，不知道对不对，欢迎讨论！
However, wood chips occupy less than half the volume of the branches from which they are made.
主要是这句话没读懂啊！
LS MM大大的赞！
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