Please can you help me solve this question :

An operation analyst is forecasting this year's demand for one of his company's products based on the following historical data: (4 year ago Quantity sold was 1083), (3 year ago Quantity sold was 1109 ), (2 year ago Quantity sold was 1816 ) and the last year Quantity sold was 1917. The previous trend line had predicted 1224 for three years ago, 1299 for two years ago and 1373 for last year. What was the mean squared error (MSE) for these forecasts? a. 22.41 O b. 0.22 O c. 392 O d. 192150