Consider COGS.xlsx. Apply the following forecasting methods to forecast two years: Implement each model in a separate spreadsheet. Plot the data. How would you describe the data in terms of seasonality and trend? Moving average using k =12. Weighted moving average using k =12 (find wi using solver) Exponential Smoothing (find using solver) Stationary Additive seasonal effect (find and using solver) Stationary Multiplicative seasonal effect (find and using solver) Double moving average (k=12) Holt's method Holt-Winter's method for additive seanonal Holt-Winter's method for multiplicative seanonal Seasonal Regression Which model is the best for this dataset? Compare each method based on MSE