NO.PZ2023090801000004
问题如下：
Due to their high degree of liquidity and safety, the most common form of collateral for both repo and derivative transactions is:
选项：
A.shorter-term government securities.
B.medium-term government securities.
C.longer-term government securities.
解释：
C is correct. Longer-term government securities are the most common form of collateral for both repo and derivative transactions due to their high degree of liquidity and safety.
因为高流动性和安全性，啥期限国债同时适用于repo和hedge？实在看不出这个因果关系啊。
基于repo和hedge都是短期投资，所以我选了ST。