(Requires Appendix)The Sample Regression Line Estimated by OLS
A)will Always $\bar { X }$

(Requires Appendix) The sample regression line estimated by OLS

A) will always have a slope smaller than the intercept.
B) is exactly the same as the population regression line.
C) cannot have a slope of zero.
D) will always run through the point ( $\bar { X }$ , $\bar { Y }$ ) .