-The Forecasting Error Measurement That Eliminates the Measurement Scale Factor

$\begin{array}{|l|l|l|l|}\hline\text { Month } & \text { Sales } & \text { Absolute Error, Forecast 1 } & \text { Absolute Error, Forecast 2 } \\\hline \text { Jan } & 35 & 5 & 2 \\\hline \text { Feb } & 29 & 1 & 3 \\\hline \text { Mar } & 39 & 4 & 4 \\\hline \text { Apr } & 42 & 2 & 3 \\\hline \text { May } & 51 & 3 & 1 \\\hline \text { Jun } & 56 & 1 & 4 \\\hline\end{array}$
-The forecasting error measurement that eliminates the measurement scale factor is the _____.

A) mean square error (MSE)
B) mean absolute deviation (MAD)
C) root mean square error (RMSE)
D) mean absolute percentage error(MAPE)