Historical demand for a product is:MonthDemandJanuary12February11March 15April 12May 16June 15a. Using a weighted moving average with weights of 0.60, 0.30, and 0.10, find the July forecast.b. Using a simple three-month moving average, find the July forecast.c. Using single exponential smoothing with alpha = 0.2 and a June forecast = 13, find the Julyforecast. Make whatever assumptions you wish.d. Using simple linear regression analysis, calculate the regression equation for the preceding demand data.e.Using the regression equation in d, calculate the forecast for July.