Figure10A-6The Optimal Consumption Bundle The budget line, BL, shows Ingrid’s possible consumption bundles given an income of $2400 per month, when rooms cost $150 per month and restaurant meals cost $30 each. I₁, I₂, and I₃ are indifference curves. Consumption bundles such as B and C are not optimal because Ingrid can move to a higher indifference curve. The optimal (or utility-maximizing) consumption bundle is A, where the budget line is just tangent to the highest possible indifference curve.