问题如下：
The preferred stock of Tedlt company is traded for $88 per share in the finacial market. Dividend per share is paid $6.60 annually forever.Calculate the required rate of return :
选项：
A.6.9%.
B.7.5%.
C.14.4%.
解释：
B is correct.
6.6 / 88 = 0.0750 or 7.5%
the required rate of return，这个东西是不考虑货币时间价值的吗？
