Indifference curves and budget lines — practice question

The diagram illustrates two indifference curves. What do indifference curves show?

• AConsumers get more satisfaction on curve I₁ from consuming more of X and less of Y.
• BConsumers get more satisfaction on curve I₂ from consuming less of X and more of Y.
• CEach point on the curve represents the marginal rate of substitution of good X for good Y.
• DMovement from I₁ to I₂ cannot be made unless the indifference curves cross.