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Suppose that consumer has the following utility function: U(X, Y) - X' BY /7. What would be the demand function for X? 21 where Px denotes price of good X and I denotes income. 5P x 31 where Px denotes price of good X and I denotes income. 5PX I where Px denotes price of good X and I denotes income. 3P x I O 3P xPy where Px and Py denote prices of goods X and Y and I denotes income