# Consider the regression model Salary= 1 + 2 WorkExperience+u .

Consider the regression model

Salary=β1+β2WorkExperience+u

.

Suppose we have another variable Region which captures where the individuals in our data set live, and

We believe that Region affects the **intercept** of the linear relationship between Salary and WorkExperience. If we wish to account for this in our model, we need to include _____ additional regressors in our regression model.

A. 6

B. 3

C. 7

D. 4