Based on the payment percentages provided in this table, which payer contributes most to the hospital's overall payments?
Payer/Charges/Payments/Adjustment/Charges/Payments
BCBS/$450,000/$360,000/$90,000/23%/31%/12%
Commercial/$250,000/$200,000/$50,000/13%/17%/6%
Medicaid/$350,000/$75,000/$275,000/18%/6%/36%
Medicare $750,000 $495,000 $255,000 39% 42% 33%
TRICARE/$150,000/$50,000/$100,000/7%/4%/13%
Total/$1,950,000/$1,180,000/$770,000/100%/100%
a. BC/BS
b. Commercial
c. TRICARE
d. Medicare