og10-30

the price the government pays for tandard weapons purchased from military contractor is determined by a pricing method called "historical costing"  Historical costing allows contractors to protect their profits by adding a percentage increase, based on the current rate of inflation, to the previous year's contractual price.

which of the following statements, if true, is the best basis for a criticism of historical costing as an economically sound pricing method for military contracts.

A the government might continue to pay for past inefficient use of funds

B the rate of inflation has varied considerabley over the past twenty years.

C the contractual pricewill be greatly affected by the cost of materials used for the products.

D many taxpayers question the amount of money the government pends on military contracts.

E the pricing method based on historical costing might not encourage the development of innovative weapons

答案是A   可是题干中没有任何地方提到inefficient。 NN们能给我讲一下这题得解题思路么？

谢谢！

定价的因素有两个 

１adding a percentage increase to ２the previous year's contractual price

如果以前的价格有问题或rate of inflation有问题，定价就有问题．

Ａ．the government might continue to pay for past inefficient use of funds就是说以前的价格有问题