Mr Daydream Jr II notices that Pizza Hut's stock has had annual returns of 16%,24%,9%,23%,X% in the last five years but he has forgotten the last period's annual return. The average return of this stock over the period was 14.4% p.a. What is the value of the missing return (X%) and risk (standard deviation) of Pizza Hut's stock, respectively? Return: 18\%; Standard deviation: 13.5% Return: 16.5\%; Standard deviation: 14.3\% Return: 23\%; Standard deviation: 18.2\% Return: 18\%; Standard deviation: 14.6\% Return: 23\%; Standard deviation: 14.6\%