Refer to the Following Data What Is the Moving-Average Forecast for the Next Period Based

Multiple Choice

Refer to the following data:
$$\begin{array} { | c | c | } \hline \text { Perind } & \text { Demand } \\\hline 1 & 58 \\\hline 2 & 59 \\\hline 3 & 60 \\\hline 4 & 61 \\\hline\end{array}$$
What is the moving-average forecast for the next period based on the last three periods?

A) 58
B) 62
C) 60
D) 61
E) None of the answer choices is correct.