Which of the Following Is Not a Restriction Typically Placed

Which of the following is not a restriction typically placed on non-PAR providers?

A) lab fees are paid as accept assignment only at the allowed fee schedule regardless of the providers status as PAR or non-PAR
B) claims must be filed by the patient
C) fees are restricted to no more than the limiting charge
D) only the deductible and/or coinsurance can be collected at the time of service