Use the Following Two Statements to Answer This Question

Use the following two statements to answer this question:
I. The price elasticity of demand is constant along the entire length of a linear demand curve.
II. The price elasticity of demand is the special name that economists give to the slope of a demand curve.

A) I and II are true.
B) I is true, and II is false.
C) I is false, and II is true.
D) I and II are false.