You take out a $$9,000$ car loan that calls for $36$ monthly payments starting after $1$ month at an APR of $9\%.$ a$.$ What is your monthly payment? $($Do not round intermediate calculations. Round your answer to $2$ decimal places.$)$ 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.$)$ 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.$)$

The last two experts was incorrect in Part C$.$ Please help.

The answer for part A is $$288\mathrm{.}82.$ The answer for part B is $9\mathrm{.}38\%$