问题
单项选择题
ff an investment of $ 4000 will grow to $ 6520 in four years with monthly compounding, the effective annual interest rate will be closest to:（）
A.11.21%.
B.12.28%.
C.12.99%.
答案
参考答案：C
解析：
N=4; PV=-4000; FV=6520; CPT→I/Y=12.99%. The question asks for the effective annual rate and gives the beginning and ending values. That the ending value was arrived at by monthly compounding is not relevant.