please answer D, E, and F

Comment on the quality/reliability of your forecasts - what concerns should you have regarding the accuracy of your linear trend line forecast? Select an alternative Trend Line that you think best fits the historical data. Make the same forecasts for July 2016 and July 2017 and plot them. What are the two values? d. e. f. Is your forecast for using the alternative trend line more or less reliable, feasible than the Linear Trend Line above? Month Sales Oct-121.94 Nov-12 0.06 Dec-121.76 Jan-13 1.78 Feb-13 3.13 Mar-13 4.25 Apr-13 4.21 May-13 1.94 Jun-13 5.62 Jul-13 3.11 Aug-13 5.28 Sep-13 5.21 MonthSales Oct-13 5.73 Nov-13 5.80 Dec-13 7.37 Jan-14 5.53 Feb-147.22 Mar-14 6.54 Apr-14 9.42 May-14 7.97 Jun-14 8.85 Jul-14 9.16 Aug-14 9.88 Sep-14 10.09 Month Sale:s Oct-14 8.63 Nov-147.75 Dec-14 7.66 Jan-15 9.79 Feb-15 9.53 Mar-15 7.08 Apr-15 9.79 May-15 9.44 Jun-15 9.26 Jul-15 7.71 Aug-15 9.63 Sep-15 8.95 Comment on the quality/reliability of your forecasts - what concerns should you have regarding the accuracy of your linear trend line forecast? Select an alternative Trend Line that you think best fits the historical data. Make the same forecasts for July 2016 and July 2017 and plot them. What are the two values? d. e. f. Is your forecast for using the alternative trend line more or less reliable, feasible than the Linear Trend Line above? Month Sales Oct-121.94 Nov-12 0.06 Dec-121.76 Jan-13 1.78 Feb-13 3.13 Mar-13 4.25 Apr-13 4.21 May-13 1.94 Jun-13 5.62 Jul-13 3.11 Aug-13 5.28 Sep-13 5.21 MonthSales Oct-13 5.73 Nov-13 5.80 Dec-13 7.37 Jan-14 5.53 Feb-147.22 Mar-14 6.54 Apr-14 9.42 May-14 7.97 Jun-14 8.85 Jul-14 9.16 Aug-14 9.88 Sep-14 10.09 Month Sale:s Oct-14 8.63 Nov-147.75 Dec-14 7.66 Jan-15 9.79 Feb-15 9.53 Mar-15 7.08 Apr-15 9.79 May-15 9.44 Jun-15 9.26 Jul-15 7.71 Aug-15 9.63 Sep-15 8.95