Indifference curves and budget lines — practice question

When her real wage increases, a worker chooses to work fewer hours. How do the income and substitution effects account for this?

• Aincome effect: negative; substitution effect: positive; balance: income effect outweighs substitution effect
• Bincome effect: negative; substitution effect: positive; balance: substitution effect outweighs income effect
• Cincome effect: positive; substitution effect: negative; balance: substitution effect outweighs income effect
• Dincome effect: positive; substitution effect: positive; balance: income effect outweighs substitution effect