Exhibit 16

Multiple Choice

Exhibit 16.2.Typically,the sales volume declines with an increase of a product price.It has been observed,however,that for some luxury goods the sales volume may increase when the price increases.The following Excel output illustrates this rather unusual relationship. Refer to Exhibit 16.2.What is the number of estimated coefficients of the cubic regression model?

A) 1
B) 2
C) 3
D) 4