(Solved): I know its not e or f In the context of a controlled experiment, consider the simple linear regres ...

I know its not e or f

In the context of a controlled experiment, consider the simple linear regression formulation $Y_i={\beta }_0+{\beta }_1{X}_i+u_i$. Let the $Y_i$ be the outcome, $X_i$ the treatment level when the treatment is binary, and $u_i$ contain all the additional determinants of the outcome. Then ${\beta }_0$ : a. is the difference between the sample average outcome of the treatment group and the sample average outcome of the control group. b. is the sample average in the control group. c. does not have an interpretation, since neither $Y$ nor $X$ are in differences. d. is not quite accurate since it is actually the derivative of $Y$ on $X$. e. All of the above. f. None of the above.