Using the bond demand and supply explained in Chapter 3, whats the potential impact of the expansionary open market operation (central bank buys bonds)? 1) decreasing the bond supply 2) increasing the bond price 3) decreasing the bond price 4) increasing the interest rate Group of answer choices [A] 1 and 2 [B] 1 and 3 [C] 2 and 3 [D] 3 and 4