30. Kevin bought a new car for $22,000. He made a down payment of $9,500 and has monthly payments of $308.10 for 4 years. He is able to pay off his loan at the end of 30 months. Using the actuarial method, find the unearned interest and payoff amount. A) u = $356.02; payoff amount: $5,853.88 B) u = $391.62; payoff amount: $4,948.08 C) u = $356.02; payoff amount: $5,497.86 D) u = $391.62; payoff amount: $6,047.65