Based on the Past 13 Years, Westerfield Industrial Supply's Common

Based on the past 13 years, Westerfield Industrial Supply's common stock has yielded an arithmetic average rate of return of 12.6 percent. The geometric average return for the same period was 11.8 percent. What is the estimated return on this stock for the next three years according to Blume's formula?

A) 11.74 percent
B) 11.92 percent
C) 12.13 percent
D) 11.38 percent
E) 12.47 percent