问题
单项选择题
An analyst does research about borrowing funds to purchase bonds. The sale of a security with a commitment by the seller to buy the same security back from the purchaser at a specified price at a designated future date is best described as:（）
A. margin buying.
B. negotiable CDs.
C. a repurchase agreement.
答案
参考答案：C
解析：
机构债券投资者可以通过回购协议进行融资，即将债券出售给对方，并承诺在未来一个短期时间里(比如说一周或者一日)再把债券以更高的价格买回来，其本质是抵押贷款。