Which of the following is the formula for average revenue?

During 1990, a Hershey candy bar cost $.85. By 2007, the same Hershey candy bar cost $1.25. If the CPI was 130.7 in 1990 and 180.5 in 2007, the price of the 1990 Hershey candy bar in 2007 prices is

A) greater than the price of the 2007 Hershey candy bar. B) less than the price of the 2007 Hershey candy bar. C) equivalent to the price of the 2007 Hershey candy bar. D) perhaps greater than, perhaps less, or perhaps the same depending on whether the CPI in 2007 has been adjusted to reflect 2007 prices. E) not able to be determined given the information in the question.

A profit maximizing firm selects output such that

A) average profit is maximized. B) total profit is maximized. C) marginal profit is maximized. D) Both A and B.