-Refer to Figure 13

-Refer to Figure 13.5. If the economy's institutions and wage bargaining practices change to make wage rate increases more sensitive to output gaps and unemployment rates, the Phillips curve:

A) would be vertical like V.
B) would be horizontal and therefore flatter than W.
C) would change its slope as illustrated by a movement from curve X to curve W.
D) would change its slope as illustrated by a movement from curve W to curve X.