You take out a $7,800 car loan that calls for 48 monthly payments starting after 1 month at an APR of 6%. a. What is your monthly payment? (Do not round intermediate calculations. Round your answer to 2 decimal places.) Answer is complete and correct. Monthly payment $183.18 b. What is the effective annual interest rate on the loan? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) Answer is complete and correct. Effective annual interest rate 6.17 % c. Now assume the payments are made in four annual year-end installments. What annual payment would have the same present value as the monthly payment you calculated? (Do not round intermediate calculations. Round your answer to 2 decimal places.) Answer is complete but not entirely correct. Annual payment S 2.259.670