suppose 'the' multiplier is 3, the money multiplier is 6 and the income multiplier with respect to the money supply is 4. The government increases spending by $12b, but because the economy is operating at full capacity it wants to use monetary policy to offset the impact that will have on income. The bank should

a. buy $1.5b bonds

b. buy $9b bonds

c. sell $1.5b bonds

d. sell $9b bonds