Answer:
The answer is Banker's bank
Explanation:
The Fed is performing its role as a banker's bank. The Fed is the U.S or the central bank in most countries are referred to banker's bank. It acts a commercial bank for all banks in the country.
Commercial banks in all countries have an account with the central bank. Commercial banks also have access to very short-term loans when it is in the distress. Banker's bank(The Fed) has the sole authority for the money supply in the economy.