Using the Sales Data on a Particular Model of a DVD

Using the sales data on a particular model of a DVD player shown below in Table 2, answer questions
Table 2
$\begin{array}{|l|c|c|c|}\hline \text { Month } & \text { Sales } & \text { Forecast 1 } & \text { Forecast 2 } \\\hline \text { Jan } & 35 & 30 & 33 \\\hline \text { Feb } & 29 & 28 & 32 \\\hline \text { Mar } & 39 & 43 & 35 \\\hline \text { Apr } & 42 & 40 & 45 \\\hline \text { May } & 51 & 48 & 52 \\\hline \text { Jun } & 56 & 55 & 52 \\\hline\end{array}$
-The mean absolute deviation (MAD) for forecast 1 is:

A) less than or equal to 2.0.
B) more than 2.0 but less than or equal to 2.5.
C) more than 2.5 but less than or equal to 3.0.
D) more than 3.0 but less than or equal to 3.5.