The Federal Reserve establishes operating targets, which will result in the achievement of intermediate targets, which will ultimately lead to the achievement of economic goals. Which of the following lists represent economic goals?

a$.$ Money supply; bank credit

b$.$ Open$-$market operations; the discount rate; reserve requirements

c$.$ Long$-$term interest rates; short$-$term interest rates

d$.$ Bank reserve levels; federal funds rate

e$.$ Productivity $($GDP$)$; employment; international trade