Questions 10-66 Through 10-69 Refer to the Following

Multiple Choice

Questions 10-66 through 10-69 refer to the following:
An operation analyst is forecasting this year's demand for one of his company's products based on the following historical data:
Year # sold
4 years ago 10,000
3 years ago 12,000
2 years ago 18,000
Last year 20,000
-What is the forecast for this year using a moving-average forecast based on the last four years?

A) 22,000
B) 20,000
C) 18,000
D) 15,000
E) 12,000