Suppose that simultaneous equations bias arises in the following set of equations. Upper Y Subscript i equals beta 0 plus beta 1 Upper X Subscript i plus u Subscript i. Upper X Subscript i equals gamma 0 plus gamma 1 Upper Y Subscript i plus v Subscript i. Which of the following statements are correct? (Check all that apply.) A. Upper Y Subscript i is correlated with v Subscript i B. Upper X Subscript i is correlated with u Subscript i C. u Subscript i is correlated with v Subscript i D. gamma 1 is correlated with beta 1