The larger the diameter of a natural gas pipeline, the lower is the average total cost of transmitting 1,000 cubic feet of gas 1,000 miles. This is an example of one reason for:

Over time, the percentage of total employment in services has ________ and in agriculture, employment has ________

A) increased; increased B) decreased; increased C) stayed about the same; decreased D) stayed about the same; increased E) increased; decreased

In a three-player game, which of the following is not one of the player designations for a payoff matrix?

A) row B) column C) chapter D) page