One Reason Office Cleaners in India Earn Less Than Office

One reason office cleaners in India earn less than office cleaners in the United States NOT because:

A) American office cleaners work harder than Indian office cleaners.
B) American office cleaners possess higher education levels than Indian office cleaners do.
C) the American economy is more productive than the Indian economy.
D) the Indian economy is more productive than the U.S. economy.