A firm offers terms of 1/10, net 30. a. What effective annual interest rate does the firm earn when a customer does not take the discount? (Use 365 days a year. Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) b. What effective annual interest rate does the firm earn if the terms are changed to 2/10, net 30, and the customer does not take the discount? (Use 365 days a year. Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) c. What effective annual interest rate does the firm earn if the terms are changed to 1/10, net 60, and the customer does not take the discount? (Use 365 days a year. Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) d. What effective annual interest rate does the firm earn if the terms are changed to 1/15, net 30, and the customer does not take the discount? (Use 365 days a year. Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) a. Effective annual interest rate % b. % Effective annual interest rate Effective annual interest rate C. % d. Effective annual interest rate %