Money is neutral in:___________
A. the short run, since it cannot alter the real aggregate output or price level in the short run.
B. both the short and long run, since it cannot alter price levels or aggregate output in the long and short run.
C. the long run, since it only affects the price level, but not aggregate output or interest rates.
D. the short run, since it cannot alter the price levels or interest rate in the short run.