a. Plot the monthly data on a sheet of graph paper.b. Forecast September sales volume using each of the following:(1) The naive approach(2) A five-month moving average(3) A weighted average using .60 for August, .30 for July, and .10 for June(4) Exponential smoothing with a smoothing constant equal to .20, assuming a a March forecastof 19(000)(5) A linear trend equation