问题
单项选择题
An analyst does research about spot and forward rate. The 4-year spot rate is 9.45%, and the 3-year spot rate is 9.85%. What is the l-year forward rate 3 years from today（）
A. 8.3%
B. 8.7%
C. 9.4%
答案
参考答案：A
解析：
