For the data below, answer the following four questions:

$\backslash$table$[[$Period$,$Demand$],[,1],[,2],[,3],[,4]]$

What would be the simple moving average forecast for the $5^{th}$ period?

$68\mathrm{.}2$

$58$

$60\mathrm{.}7$

$59\mathrm{.}5$

$61$