the questions within the picture

Note: this question will not be automatically graded. It will be sent to your instructor for review. Patient statements may be prepared using a spreadsheet format. The AMT DUE column is a running total; that is, the charge for each service line is added to the previous AMT DUE figure. The total due on the statement can be cross-checked by comparing the AMT DUE in the last box with the total of all CHARGES. These amounts should be the same. For example: SERVICE PT PROC DIAG. SERVICE INS. PT AMT ADJ DATE NAME CODE CODE DESCRIPTION CHARGES PAID PAID DUE 0/12/2029 Lisette 99214 N39.0 OV, 91.00 -0- -0- -0- 91.00 Lugo moderate, est. patient 81001 UA 17.00 -0- -0- -0- 108.00 108.00 108.00 A. If for the 10/12/2029 charges, the patient made a payment of $50 and the third-party payer paid $20, what balance would be due? B. What balance would be due if the patient and payer made these payments but the previous statement showed a $81 balance