问题如下：
The interest rate on a repurchase agreement is lower when:
选项：
A.colleteral security is delivered to the lender.
B.repo term is longer.
C.the interest rates of alternative financing in the money market are higher.
解释：
A is correct.
The interest rate on a repurchase agreement is known as repo rate.
The repo rate is lower when colleteral security is delivered to the lender, or the repo term is shorter, or the interest rates of alternative financing in the money market are lower.
老师，我不是特别理解C为什么不对，在市场上其他地方拆钱更贵更高，不应该我的repo更低么？
