For the Data $(0,100),(1,200),(2,220),(3,220),(4,266),(5,318)$ , Where the First Number in Parenthesis Is Period and Parenthesis

Multiple Choice

For the data $(0,100) ,(1,200) ,(2,220) ,(3,220) ,(4,266) ,(5,318)$ , where the first number in parenthesis is period and the second number is the actual demand, the exponentially smoothed forecast for period $6\left(\mathrm{~F}_{6}\right)$ , with initial forecast $\left(\mathrm{F}_{0}\right) =100$ , was found to be 312.3. The researcher forgot the a used in the calculations, but it is known that the a used is either 0.9 or 0.2 . What is your best guess for the $\alpha$ used, applying the properties of exponential smoothing?

A) 0.2
B) 0.9
C) Either 0.2 or 0.9
D) Cannot be guessed
E) Only way is to calculate with both a and check