A concert promoter is forecasting this year's attendance for one of his concerts based on the following historical data:Year Attendance4 years ago 10,0003 years ago 12,0002 years ago 18,000Last year 20,000What is this year's forecast using exponential smoothing with alpha = .2, if last year's smoothed forecast was 15,000?A. 20,000 B. 19,000 C.17,500 D.16,000 E.15,000What is this year's forecast using the least squares trend line for these data?A. 20,000 B. 21,000 C. 22,000 D. 23,000 E. 24,000