Answer: $0; $0
Explanation:
New classical economists believe that any fiscal policy that the government embarks on is ineffective on the goods demanded by people.
If the government reduces taxes, Crystal (according to the New classical) will believe that the government will raise taxes in future to make up for the shortfall so she will send the $2,500 to savings so she can be able to pay off the future taxes.
If the government increases spending, Crystal will believe that this will be financed by future tax increases so she will still save the money to pay off future taxes.