Refer to the given data. This firm's product price is:

If a firm does NOT know its rival's profit function, then we consider that information to be

A) irrelevant in deciding its best strategy. B) private. C) common knowledge. D) Pareto sub-optimal.

Which of the following statements is correct?

a. The consumer price index is a measure of the overall level of prices, whereas the GDP deflator is not a measure of the overall level of prices. b. If, in the year 2011, the consumer price index has a value of 123.50, then the inflation rate for 2011 must be 23.50 percent. c. Compared to the GDP deflator, the consumer price index is the more common gauge of inflation. d. The consumer price index and the GDP deflator reflect the goods and services bought by consumers equally well.