Figure 20-4 -The Consensus Among Researchers Is That Union Workers Earn 15

Multiple Choice

Figure 20-4
-The consensus among researchers is that union workers earn 15 percent more than otherwise identical nonunion workers.This means unions have probably raised wages

A) exactly 15 percent.
B) less than 15 percent.
C) at least 15 percent.
D) more or less than 15 percent, but one cannot tell exactly.