Which of the Following Correctly Shows Union Density from the Highest

Multiple Choice

Which of the following correctly shows union density from the highest to the lowest:

A) Canadian private sector, Canadian public sector, U.S.public sector, U.S.private sector
B) Canadian public sector, Canadian private sector, U.S.public sector, U.S.private sector
C) Canadian public sector, Canadian private sector, U.S.private sector, U.S.public sector
D) U.S.public sector, Canadian public sector, Canadian private sector, U.S.private sector
E) Canadian public sector, U.S.public sector, Canadian private sector, U.S.private sector