Calculate the monthly finance charge for the credit card transaction. Assume that it takes $10$ days for a payment to be received and recorded, and that the month is $30$ days long. $($Round your answers to the nearest cent.$)$

$$4000$ balance, $16\%,$$$2,500$ payment

$($a$)$ previous balance method

$ $$

$($b$)$ adjusted balance method

$ $$

$($c$)$ average daily balance method

$