The Following Table Shows the Data for the Sales of Tennis

Multiple Choice

The following table shows the data for the sales of tennis rackets at a store for 4 consecutive months. Find the forecast error in month 4 using a 3-month moving average.
$\begin{array} { | l | l | l | l | l | } \hline \text { Month } & 1 & 2 & 3 & 4 \\\hline \text { Sales } & 80 & 95 & 125 & 110 \\\hline\end{array}$

A) The forecast error in month 4 is less than or equal to 5.
B) The forecast error in month 4 is more than 5 but less than or equal to 10.
C) The forecast error in month 4 is more than 10 but less than or equal to 15.
D) The forecast error in month 4 is more than 15.