Indifference curves and budget lines — practice question

Whenever the price of a good alters, the change in quantity demanded is caused by an income effect and a substitution effect. Which statement about these effects is always true?

• AFor inferior goods, the income effect and substitution effect work in the same direction.
• BFor inferior goods, the substitution effect outweighs the income effect.
• CFor normal goods, the income effect and substitution effect work in the same direction.
• DFor normal goods, the income effect outweighs the substitution effect.