please answer all parts with correct calculations and explanations. QUESTION: A store has the following demand figures for the last four years:

Year	Demand
1	100
2	150
3	112
4	200

Given the demand forecast for year 2 of 100, the trend forecast for year 2 of 10, an alpha of 0.3, and a beta of 0.2, what is the demand forecast for year 3 using the double exponential smoothing method?

115

120

125

130