RDN’s sales of cable modem in San Mateo, California, for the months of January through April were as follows:January February March April 50 80 70 60Suppose exponential smoothing is used with a smoothing constant (alpha) of 0.30. If the forecast for January were 50, the forecast for May would be approximately:a. 51.60b. 59.04c. 60d. 53.08e. 50