Including an interaction term between two independent variables, X1 and X2, allows for the following except:
A)the interaction term lets the effect on Y of a change in X1 depend on the value of X2.
B)the interaction term coefficient is the effect of a unit increase in X1 and X2 above and beyond the sum of the individual effects of a unit increase in the two variables alone.
C)the interaction term coefficient is the effect of a unit increase in img
D)the interaction term lets the effect on Y of a change in X2 depend on the value of X1.