Sandy's comprehensive major medical policy has a $100 annual deductible and 20% coinsurance with a stop-loss when out-of-pocket costs reach $4,000.Sandy incurred medical bills of $600 for tests for an injury and then $12,000 for an illness.What amounts will the insurer pay of Sandy's medical bills?

Group of answer choices

$3,600

$4,000

$10,000

$8,600