[求助]请教prep08-109，关于前提和结论

iflonely

TrueSaveis a mail-order company that ships electronic products from its warehouses tocustomers worldwide.  The company’sshipping manager is proposing that customer orders be packed with newer, moreexpensive packing materials that virtually eliminate damage duringshipping.  The manager argues that overallcosts would essentially remain unaffected, since the extra cost of the newpacking materials roughly equals the current cost of replacing productsreturned by customers because they arrived in damaged condition.

Whichof the following would it be most important to ascertain in determining whetherimplementing the shipping manager’s proposal would have the argued-for effecton costs?

A.Whether the products shipped by TrueSave are more vulnerable to incurringdamage during shipping than are typical electronic products

B.Whether electronic products are damaged more frequently in transit than aremost other products shipped by mail-order companies

C.Whether a sizable proportion of returned items are returned because of damagealready present when those items were packed for shipping

D.Whether there are cases in which customers blame themselves for product damagethat, though present on arrival of the product, is not discovered until later

E.Whether TrueSave continually monitors the performance of the shipping companiesit uses to ship products to its customers

想问一问，这个题目的前提和结论应该是什么呢？前提和结论之间是因果，还是果因模式呢？