Question 1 and Question 2 are based on the data below. ABC is a computer retailing store. Its actual and forecast demands for the past six months are given in the table below. The forecasting model is evaluated from Month 1 using the mean absolute deviation (MAD) and tracking signal (TS). What is the calculated MAD and TS for the forecasting model at Month 4? MAD=4.25,TS=2.59MAD=4,TS=1MAD=17,TS=10.2MAD=4.25,TS=3.75