mary cardenas had a policy with a $500 deductible, which paid 80% of her covered charges less deductible. she had medical expenses of $12,500. calculate:

a. the company's payment
$9,600
$12,000
$500

b. mary's 20% copayment
$2,400
$500
$9,600

c. mary's total cost
$2,900
$500
$2,400