Due to the collapse in home prices during the financial crisis of 2008, households became more pessimistic and lowered their consumption share from 𝑎 ¯ 𝑐 to 𝑎 ¯ 𝑐 ′ < 𝑎 ¯ 𝑐 . In order to maintain 𝑌 ~ 𝑡 at its pre-crisis level, the central bank should have [ Select ] raised maintained lowered the real interest rate in order to [ Select ] raise maintain lower the investment share in the economy.多重下拉选择题