Which of the following is/are correct regarding the distinction between microeconomics and macroeconomics? a) An increase in the general price level in the economy is an example of macroeconomic variables. b) The SARB decided to keep the repo rate unchanged at 3.5%; this is in line with expectations of most economists. c) The price of oranges at the supermarket is an example of the microeconomic variables. a. b only b. a only c. a and b d. a, b and c e. b and c