Suppose a stock has a mean return of 13.5% over the last 10 years. The stock has returned 14.7%, 12.2%, 3.9%, 11.9%, 21.0%, 6.5%, 9.7%, 15.1%, and 20.1% in nine of the last ten years. What was the return in the tenth year? O 10.8% O 15.2% 12.7% O 14.2% O 16.1% O 19.9% 13.5%