4. Linearity is one assumption of classicalist in simple regression analysis. Identify which of the following satisfies this assumption. Discuss why?
a, LnY2=( +(1X1i +(2X2i +Ui
B, Y=( +(1/(1) X1i +(2X2i +Ui
C, Y=( +(1X21i +(2X2i +Ui
D, LnY=( +(1LnX1i +(2LnX2i +Ui
e. Yi=( +(2Xi + Ui
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