An Apple Juice Producer Buys All His Apples from a Conglomerate

An apple juice producer buys all his apples from a conglomerate of apple growers in one northwestern state.The amount of juice squeezed from each of these apples is approximately normally distributed with a mean of 2.25 ounces and a standard deviation of 0.15 ounce.Between what two values (in ounces) symmetrically distributed around the population mean will 80 percent of the apples fall?

A) $\left[ \begin{array} { l l } 2.13 & 2.37\end{array} \right]$
B) $\left[ \begin{array} { l l } 2.10 & 2.40\end{array} \right]$
C) $\left[ \begin{array} { l l } 2.06 & 2.44\end{array} \right]$
D) $\left[ \begin{array} { l l } 1.95 & 2.55\end{array} \right]$