The actual demand and forecast in the last 8 periods are given. Which of the following statement is not true?
1) The actual demand is greater than the forecast in all 8 periods.
2) The actual demand is less than the forecast in all 8 periods.
3) The actual demand is equal to the forecast in all 8 periods.
4) The actual demand is greater than the forecast in some periods and less than the forecast in other periods.