Cho, a financial analyst at a small food-processing company, was asked by the CFO to forecast the costs of the company's required raw materials over the next five years. You would advise her to:


a. collect data carefully, use a simple forecast model, do not allow for any unexpected events.

b. use a complex forecast model, do not rely upon it alone. use simple forecast models, and make multiple forecasts to get an average.

c. use a simple forecast model, rely on increased accuracy farther into the future.

d. use complex forecast models, and make multiple forecasts to get an average.