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The sale of a product during the past five years is tabulated below. Using the least square method of forecasting Fit a straight line and estimate the sales for the year 2022 and 2023. Year: 2017 2018 2019 2020 2021 2022 2023 20 Sales ('000): 01. A. a = 22 25 32 38 45 ? ? B. b = 8.3 C. Y22 = 50.9 D-Y23 = 57.2 2. A. a = 32 B. b = 8.3 C. Y22 = 60 D-Y23 = 70 O 3. A. a = 32 B. b = 6.3 C.Y22 = 50.9 D-Y23 - 57.2 O 4. A. a = 22 B. b = 6.3 C.Y22 = 50.9