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? Group of answer choices Return: 18%; Standard deviation: 14.6% Return: 23%; Standard deviation: 14.6% Return: 23%; Standard deviation: 18.2% Return: 18%; Standard deviation: 13.5% Return: 16.5%; Standard deviation: 14.3%