A potential buyer of a car values it at $30,000. The owner (potential seller) of the same care values it at $20,000. If the transaction is consummated as a price of $24,000, the transaction will generate:

1. a)No surplus
2. b)$4,000 worth of seller surplus and unknown amount of buyer surplus
3. c)$6,000 worth of buyer surplus and $4,000 of seller surplus
4. d)$6,000 worth of buyer surplus and unknown amount of seller surplus

Give me the answer and explanation