If the Fed Decides to Buy T-Bills, It Increases the Demand

Multiple Choice

If the Fed decides to buy T-bills, it increases the demand for T-bills.How will this affect the price of T-bills and the interest rate?

A) T-bill prices fall and interest rates fall.
B) T-bill prices rise and interest rates rise.
C) T-bill prices rise and interest rates fall.
D) T-bill prices fall and interest rates rise.