Suppose in a simple economy with no foreign sector, the MPC equals 0.8. Intended investment spending has suddenly fallen, reducing AE and output to a level that is 100 million below Y*. a. If the government decided to try to get the economy back to full employment using only an increase in government spending (AG), by how much would G need to be increased? b. If the government, instead, decided to try to get the economy back to full employment using only a lump-sum tax cut (AT), how big of a tax cut would be needed? 0. Which scal policyincreasing G, decreasing T, or increasing TR-would do the least amount of damage to the government budget decit