Carol Jones Is a Patient with Medicare at Your Medical

Carol Jones is a patient with Medicare at your medical office. She has come in for treatment for which the usual fee is $175; however, the MFS allows only $140 for such a service. Carol's copayment is 10% of any treatment. How much do you bill Carol?

A) $17.50
B) $14
C) $49
D) $3.50
E) $35