Which of the Following Statements Best Describes the Difference Between

Which of the following statements best describes the difference between "union density" and "collective bargaining coverage?"

A) Because it includes agricultural workers, union density is usually a bit higher than collective bargaining coverage.
B) Union density describes the strength of unions in the private sector; collective bargaining coverage means the same thing in the public sector.
C) Collective bargaining coverage is usually a bit higher since some nonunion members still receive the wages and benefits negotiated by unions.
D) Collective bargaining coverage is the United States' term for what we refer to as union density in Canada.