Answer:
B. If the car had actually been in a wreck
Step-by-step explanation:
The first effect if the car had been a wreck would be to greatly reduce the value of the car. So, if Gary thought he paid a good value for a non-wrecked car, he would then have overpaid for a wrecked car.
The second effect would be that the seller would have lied... which could lead to legal consequences.
A. If the car was dirty . Unless it's an extreme case, the cleanliness of a car doesn't affect its value
C. If the car was worth more than he paid . Then it would be beneficial for Gary.
D. If the police pulled him over for speeding. The fact that Gary was caught speeding has no relation with the transaction.