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Question: You are a senior financial analyst and have been asked to examine whether the global

financial crisis and the COVID-19 affect financial and non-financial firms to the same extent? For the period beginning in 2006, plot the interest rates on three-month nonfinancial commercial paper (FRED code: CPN3M), three-month financial commercial paper (FRED code: CPF3M) and Treasury bills (FRED code: TB3MS).

Compare the evolution of these interest rates.