FIGURE 4-2 -Refer to Figure 4-2.In Diagram 3,the Elasticity of Demand Between

Multiple Choice

FIGURE 4-2
-Refer to Figure 4-2.In diagram 3,the elasticity of demand between prices $10 and $20 is

A) 0.
B) less than 1.
C) exactly 1.
D) greater than 1.
E) infinity.