Which of these are correct

Assume that in 2019, the economy had the following leakages and injections: Savings = $900 million. Taxation = $800 million. Imports = $500 million. Exports = $500 million. Investment = $800 million. Government expenditure = $900 million. In 2020 Savings = $800 million. Taxation = $700 million. Imports = $750 million. Exports - $400 million. Investment = $800 million. Government expenditure = $900 million. Refer to the data above. What was the overall impact on economic activity in 2020? Economic activity expanded by $200 million in 2020. Economic activity expanded by by $100 million in 2020. Economic activity contracted b $150 million in 2020. Economic activity contracted by by $200 million in 2020