Suppose the Federal Reserve purchases $\$ 1,000,000$ worth of foreign assets.
a. If the Federal Reserve purchases the foreign assets with $\$ 1,000,000$ in currency, show the effect of this open market operation, using T-accounts. What happens to the monetary base?
b. If the Federal Reserve purchases the foreign assets by selling $\$ 1,000,000$ in $\mathrm{T}$ -bills, show the effect of this open market operation, using T-accounts. What happens to the monetary base?