MetroUrban Bank Has 27 Branches,each with a Branch Manager

MetroUrban Bank has 27 branches,each with a branch manager.These branches range in size from mini-branches in grocery stores,to large branches with many business and investment clients.Mini-branches may have only three or four employees.Large branches may have as many as fifty employees.Of MetroUrban's branch managers,15 are female and 12 are male.Female branch managers average pay is 75% of the male branch managers pay.Has the bank violated the Equal Pay Act?

A) No. Women branch managers are not a protected class in this case because a majority of branch managers are female.
B) No. The bank only began hiring women to be branch managers about 10 years ago. Consequently, the female branch managers have been with the bank a fewer number of years than the males. Typically, the branch managers of the larger branches are bank officers who have more years of experience with the bank.
C) No. Business clients prefer to do business with male branch managers. Consequently, the larger branches are assigned male managers. Since these branch manager positions are much more challenging jobs, the bank can legally pay managers at these branches more than they pay managers of other branches.
D) No. The female branch managers' job title is "community banking representative" and the male branch managers' job title is "branch manager." Traditionally, the bank has paid "community banking representatives" less than "branch managers."