What is the condition for the central bank's management of expectations at the zero lower bound?
a. Decreasing the federal funds rate will lead to a reduction in the discount rate.
b. If economic agents believe that the price of an individual asset will rise in the future, they will buy that asset today, contributing to its eventual price increase.
c. If households expect an increase in prices in the future, they will engage in spending today.
d. Households will increase their spending if they believe that the central bank is committed to maintaining zero interest rates over an extended period.