QUESTION: 19 Note: Use the lecture 7 "Zarthan Multiple Regression Model" spreadsheet (specifically tabs 2, 3. and 4) to answer this question. In the Zarthan case, if the decision-maker wishes to select a single independent variable model. which one would you recommend? A X1 B X2 X2. C Both X1 and X2 are equally good I] D Both X1 and X2 are not significant