One piece of evidence in favor of the efficiency wage model is that some sectors of the economy pay relatively high wages, whereas other sectors pay lower wages. this supports the efficiency wage model as it seems to provide evidence of what?
a. unemployment is constant across sectors. b.there are compensating differentials being paid depending on the type of work being done. c. workers voluntarily provide bonds in case they are caught shirking. d. high-wage firms take advantage of delayed-compensation contracts. e. the existence of dual labor markets.