A Regression Analysis Between Sales (In $1000)and Advertising (In $)Resulted $\hat{y}$

Multiple Choice

A regression analysis between sales (in $1000) and advertising (in $) resulted in the following least squares line: $\hat{y}$ = 80,000 + 5x.This implies that an:

A) increase of $1 in advertising is expected to result in an increase of $5 in sales.
B) increase $5 in advertising is expected to result in an increase of $5,000 in sales.
C) increase of $1 in advertising is expected to result in an increase of $80,005 in sales.
D) increase of $1 in advertising is expected to result in an increase of $5,000 in sales.