A forecasting model yields the following forecasts as compared
to the actual.

Forecasting: 10 10 20 30 40 50 60

Actual: 7 11 23 35 42 56 61

Which one of the following is the MAD for this forecasting
model?

      a. – 2.86
               
b.
3.00                        
c. 3.71
                                   
d. 26.00