actual sales in April and MAy were 50 and 60 units. Forecast sales for those same two months were 55 and 65. What of the following statements about

actual sales in April and MAy were 50 and 60 units. Forecast sales for those same two months were 55 and 65. What of the following statements about the two forecasts is true?

a. the average error is -5 and the MAD is 5

b. the average error is 0 and the MAD is 5

C. the average error is 0 and the MAD is 0

d. the average error is 5 and the MAD is 5

e. none of the above