Could you please answer it by providing step by step solution and explanation? I would be very grateful! (Intermediate Macroeconomic) (this question is based on the real-world application)

8. The government of Canada has provided several stimulus responses to support the economy amidst the COVID-19 pandemic. These fiscal measures include the Canada Recovery Benefit, Canada Emergency Wage Subsidy, and Canada Emergency Business Account. The fiscal stimulus spending has resulted in record budget deficits. a. Discuss the implications of large and persistent budget deficits for public debt sustainability. (4 marks) b. Based on the government budget constraint, with public debt we know that the government has two tools available to deal with eliminating debt: taxation and spending. Discuss how the government can use these tools to reduce the deficit and the problems and challenges associated with each tool