问题如下：
Which of the following cash flows belong tothe Stochastic amount/Deterministic time category?
选项：
A. Completely new contracts
B. Renewal of Expiring Contracts
C. Loans or mortgages
D. bank’sdecisions to withdrawals of credit lines
解释：
考点：对A Taxonomy of Cash Flows的理解
答案：B
解析：
选项A属于Stochasticamount/Stochastic time
选项B属于Stochasticamount/Deterministic time
选项C属于Stochastic amount/Stochastictime
选项D属于Deterministicamount/Stochastic times
为什么loan和mortgage在金额上也不确定呢？贷款额度不是一开始就约定好的吗？ 时间不确定是prepay带来的，金额不确定是什么带来的呢？
