Assume that the one-year interest rate is on the vertical axis of the IS-LM model and that the yield curve is initially upward sloping. Suppose that financial market participants expect that the central bank will pursue an open market purchase of bonds in the future. Given this information, we would expect which of the following to occur?
A. The yield curve will become flatter.
B. The yield curve will become vertical.
C. The yield curve will become steeper.
D. The yield curve will become downward sloping.