Exhibit 28-9 -Refer to Exhibit 28-9.Let DA and DB Represent Demand for DB

Exhibit 28-9

-Refer to Exhibit 28-9.Let DA and DB represent demand for labor curves facing unions A and B,respectively.As a result of their efforts,both unions succeed in increasing the wage rate from W? to W?.In terms of the wage-employment trade-off,the wage increase

A) had a larger impact on employment for union A than for union B.
B) had a larger impact on employment for union B than for union A.
C) had the same impact on employment in both unions.
D) cannot be determined without further information.