If X2 is a binary predictor (i.e. it is a dummy variable) in Y = 0 + 1X1 + 2X2, then which statement is most nearly correct?

X2 = 0, X2 = 1, X2 = 2 would be appropriate if three categories exist

X2 will shift the estimated value of Y either by 0 units or by 2 units

X2 would be a significant predictor if 2 = 423.72

X2 = 1 should represent the most desirable condition