Round your answers in part (c) to 2 decimal places, and round the MAD/MAE to 3 decimal places. (c) Calculate the MAD (mean absolute deviation), also known as the MAE (mean absolute error), for weighted moving averages for 2017-2019 (use results from the previous problem with weights 4,2, 1 starting from the most recent time period). Weighted Year Revenue Moving Absolute Error Averages 2014 8.5 2015 6.5 2016 8.4 2017 6.7 2018 8.3 2019 5.3 MAD/MAE = (d) Which method provides a better forecast of the revenue for 2017-2019? Round MAD/MAE to three decimal places. O 3-Year Moving Averages, since the MAD/MAE for 3-Year Moving Averages is greater than the MAD/MAE for Weighted Moving Averages. O Weighted Moving Averages, since the MAD/MAE for Weighted Moving Averages is greater than the MAD/MAE for 3-Year Moving Averages. O 3-Year Moving Averages, since the MAD/MAE for 3-Year Moving Averages is less than the MAD/MAE for Weighted Moving Averages. O Weighted Moving Averages, since the MAD/MAE for Weighted Moving Averages is less than the MAD/MAE for 3-Year Moving Averages. O None of the above