NO.PZ2024062801000060
问题如下：
选项：
A.
Long-term asset sales are typically used to cover immediate needs.
B.
Monetary policy and interest rate movements are relatively independent.
C.The federal funds market is available anytime a bank has an immediate cash need.
D.Deficits which must be covered relatively quickly are often funded through the central bank discount window.
解释：
D更即期的赤字往往通过中央银行的贴现窗口来融资。长期资产的出售通常用来弥补更长期（非即时）的赤字。货币政策和利率变动密切相关，因为货币政策影响货币供应量，进而影响利率。联邦资金市场仅在交易时段内可用。
这道题怎么理解，解释一下，看不懂题干
