Which of the following apply to check-in procedures related to up-front collections? (Select all that apply.)

a) If the plan summary grid for the patient's plan lists an office visit copay, collect the copay and post it to the patient's account.
b) Copayments should be waived if the patient was not happy with the charge.
c) Be sure the correct copayment has been collected.
d) Copayments should be collected after the visit and sent through the mail.