THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The table below shows the quarterly sales of a particular kind of vaccine for dogs.The forecaster uses autoregressive models with p = 3 to forecast the sales for future time periods.

-The autoregressive equation is:

A) Sales = 104 + 0.231 Saleslag 1 - 0.439 Saleslag 2 + 0.397 Saleslag 3
B) Sales = 0.397 + 0.231 Saleslag 1 - 0.439 Saleslag 2 + 104 Saleslag 3
C) Sales = 104 + 0.439 Saleslag 1 - 0.231 Saleslag 2 + 0.397 Saleslag 3
D) Sales = 0.397 + 0.439 Saleslag 1- 0.231 Saleslag 2 + 104 Saleslag 3