Social welfare is maximized in a perfectly competitive market

In a perfectly competitive market, a permanent increase in demand initially brings a higher price, economic

A) loss, and entry into the market. B) loss, and exit from the market. C) profit, and entry into the market. D) profit, and exit from the market.

Electricity pricing that varies in its billing expense throughout the day is called

a. marginal cost pricing b. variable pricing c. full cost pricing pricing d. marginal pricing e. dynamic pricing