$(26$ pts$)$ Refer to the data set in the $$Q$2$ spreadsheet, which shows monthly demand for the ABC corporation. a$)$ Forecast the monthly demand for Year $6$ using the trend projection only. Report your forecast. $(2$ pts$)$ What are the values of MAD, MAPE, MSE, and TS$?(4$ pts$)$ b$)$ Forecast the monthly demand for Year $6$ using the trend & seasonality adjustment. Report your forecast. $(8$ pts$)$ What are the seasonal factors for each month? $(4$ pts$)$ What are the values of MAD, MAPE, MSE, and TS$?(4$ pts$)$ c$)$ Based on your analysis, should you consider the seasonality in the forecast? Why or why not? $(4$ pts$)\backslash$table$[[$Sales$,$Year $1,$Year $2,$Year $3,$Year $4,$Year $5]]$