Here is an asset: The return in year 1 is 15%. The return in year 2 is negative 10%. The return in year 3 is unknown. The arithmetic average return is 7%. What is the return in year 3? What is the standard deviation of returns?

Choices:

15%. 14.42%.

16%. 14.89%.

16%. 14.73%.

15%. 14.68%.