A consumer reaches maximum total utility when he first purchases 10 units of good X and 10 units of good Y. If both goods are normal, what would make this utility-maximising consumer buy more of good Y and less of good X?
- Aan increase in the marginal utility of good Y
- Ban increase in the price of good Y
- Can increase in the tax on the consumption of good Y
- Dan increase in the tax on the income of consumers