hi please help me with this prac question. can you please include a detailed explanation too for each of the statements please. thank you

Briefly explain whether each of the following statements is true or false. 1. If money demand is perfectly interest inelastic then fiscal policy has no effect on real GDP according to the IS-LM model. 2. There are costs of positive rates of inflation, but no costs of deflation. 3. The Fisher model of consumption predicts the current consumption of savers is unambiguously lower after a fall in interest rates. 4. Firms' incentives to pay efficiency wages can be a cause of classical unemploy- ment. 5. An increase in the ratio of cash holdings to deposits raises the money multiplier. 6. If real interest rates become negative, the neoclassical model of investment pre- dicts there is now no limit to how much capital firms want to purchase. 7. Monetary policy set with discretion is said to feature an inflation bias because commitment to a rule could achieve lower inflation at no cost in terms of higher unemployment. 8. In the AK model of economic growth, a country that raises its saving rate has a permanently higher growth rate of income per person