How do you solve this question?

iv) The companys forecasting specialist argues that the current forecasting method is also an exponential smoothing method; however, they do not remember the value of the smoothing constant alpha they used. Do they actually use the exponential smoothing method (and if so, what is the value of alpha)?

45+= Year Actual Demand Current Forecast MAD TS New Forecast (a= 0.2) 350 2014 401 350 | 51 39 2015 374 401 0.62 1.28 2016 390 374 31.3 360.2 395.6 377.2 2017 170 -2:30 390 170 78.5 95 2018 331 -0.2 346