A manager has been using a certain forecasting technique to forecast demand for word processing units for the past ten periods. Actual and forecasted amounts are shown below. He had difficulties in identifying whether this technique is better than the second moving average. The best forecasting technique is Period 1 2 3 Demand 89 90 93 92 Forecasted 95 88 94 67 4 o none of the two technique O the manager's forecasting technique O both of the two technique o the MA-2 technique