Which one of the following statements about forecasting is true? Less accurate forecasts are obtained for a group of items because only one forecast is being made instead of several. More accurate forecasts are obtained for a group of items because the individual forecast errors for each item tend to cancel each other. Less accurate forecasts are obtained for a group of items because the individual forecast errors for each item tend to reinforce each other. More accurate forecasts are obtained for a group of items because only one forecast is being made instead of several