Answer:
3, the consumer surplus decreases
Step-by-step explanation:
Consumer surplus is the difference between the willingness to pay of a consumer and the price of the good.
For example if the willingness to pay for a good is $60. If the price of the good rise from $30 to $40. The consumer surplus would fall from $30 to $20.
Budget constraint is the amount of goods and services a consumer can purchase given the consumers income and the price of goods.
Only increase or decrease in income leads to a shift of the budget constraint.
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