NO.PZ2023061903000078
问题如下：
Q. Which of the following is a limitation on the ability of central banks to stimulate growth in periods of deflation?选项：
A.Ricardian equivalence B.Interaction of monetary and fiscal policy C.Interest rates cannot fall significantly below zero解释：
C is correct. Deflation poses a challenge to conventional monetary policy because once the central bank has cut nominal interest rates to zero (or slightly less than zero) to stimulate the economy, they cannot cut them further.
不太理解
