-The Above Figure Illustrates the Demand for Hamburgers

-The above figure illustrates the demand for hamburgers. When the price is $1 a hamburger, the elasticity of demand is _______ and a 1 per cent increase in the price will _______ the quantity of hamburgers demanded by _______ per cent.

A) 1.00; decrease; 0.40
B) 2.50; increase; 2.50
C) 5.00; decrease; 5.00
D) 0.40; decrease; 0.40