A Straight- Line Demand Curve with Negative Slope Intersects the Horizontal

Multiple Choice

A straight- line demand curve with negative slope intersects the horizontal axis at 200 tonnes per week. The point on the demand curve at which the price elasticity of demand is 1 corresponds to a quantity demanded

A) of 200 tonnes.
B) of 100 tonnes.
C) of zero tonnes.
D) that would be negative if a negative quantity demanded were possible.