Within Different Price Ranges Along a Demand Curve, Price Elasticities

Multiple Choice

Within different price ranges along a demand curve, price elasticities of demand are

A) constant across all price ranges
B) different, and greater, equal to, or less than one depending on the price range
C) positive or negative, depending upon whether they are elastic or inelastic
D) always less than one because total revenue increases when price falls
E) always greater than one because total revenue increases when price falls