The Least-Cost Combination of Inputs for a Specified Output

The least-cost combination of inputs for a specified output:

A) can be read directly from the production-function schedule.
B) will be independent of variations in the price of the factors used.
C) is indeterminate, as is shown by the production-function schedule, which indicates a number of ways of producing any given output.
D) is determined by using the prices of the factors to compute the cost of the different input combinations that will produce the specified output.
E) will shift when the prices of the factors change, so that the factor whose price has gone up will be used more to maintain quality.