28. All other things being equal, an increase in the domestic price level will a. increase the value of real money balances and hence cause an upward shift in the consumption function b. decrease the value of real money balances and hence cause an upward shift in the consumption function c. cause exports to increase, thereby causing the net export function to shift downward d. decrease the value of real wealth and cause the consumption and aggregate expenditure functions to shift downward e. cause input prices to fall