FIGURE 2- 3 -Refer to Figure 2- 3. the Slope of Curve B

Multiple Choice

FIGURE 2- 3
-Refer to Figure 2- 3. The slope of curve B is

A) negative from Y1 to Y2 and positive between Y2 and Y3.
B) undefined at X2.
C) always negative but variable.
D) zero at X2.
E) always positive but variable.