Assume an economy is in short-run equilibrium with a real output (or real GDP) of Y0 and a price level of PL0. If the government increases income taxes on all income levels, what is the likely effect? An increase in real output and a decrease in the price level A decrease in real output and a decrease in the price level An increase in real output with an indeterminate effect on the price level An increase in real output and an increase in the price level An indeterminate effect on real output and an increase in the price level