问题
单项选择题
An analyst does research about central tendency and gathers the following information about a company:
| Year | Earnings per Share | Market Price per Share | Price-to-Earnings Ratio |
| 2009 | $4.00 | $28 | 7.0 |
| 2010 | $2.00 | $22 | 11.0 |
| 2011 | $3.00 | $19.5 | 6.5 |
A. 7.74
B. 7.94
C. 8.17
答案
参考答案：A
解析： 3/(1/7+1/11+1/6.5)=3/(0.14286+0.09091+0.15385)=7.74。