请教一题CR[求助]

joycesong

The price the government pays for standard weapons purchased from military contractors 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 statement, if ture, is the best basis for a criticism of  historical costing as an economically sound pricing method for militart contracts?

a The goverment might continue to pay for past inefficient use of funds.
b The rate of inflation has varied considerablely over the past twenty years
c The contractual price will be greatly affected by the cost of materials used for the products.


此题答案为a, 请指教，谢谢各位！！

cranberry

this question has been explained before,and to understand the relationship between the "past" and "now" is key to solve the problem .the costing structure is as follows:
past*(1+x%),and the cost depends on the two variables :the past and the x,so if we attack the structure,we may say the past is unreasonable or the x is .a attacks the past by saying "the past use is unefficient"and "we will have been overcharged year by yr".

joycesong

thanks a lot