Compare two forecasting methods-method A and method B. Suppose that method A gives the point forecasts 57, 61, and 70 of three future time series values. Method B gives the point forecasts 59, 65, and 73 of these three future values. The three future values turn out to be 60, 64, and 67. [A) Calculate the MAD and MSD for method A. (Negative answers should be indicated by a minus sign.) Method A Forecast errors MAD MSD (B) Calculate the MAD and MSD for method B. (Round your answers for MAD and MSD to 2 decimal places. Negative answers should be Indicated by a minus sign.) Method B Forecast errors MAD MSD