The odometer is supposed to show how many miles a car has driven and if it has been rolled back, it means that the car has been used more than what is being shown and therefore it would be that they were cheated and hence not thrilling.
Context: I bought a used car for my son and found out later the odometer had been rolled back.
Hypothesis: I was thrilled when I found out the odometer on the car I just bought for my son had been rolled back

Is the hypothesis incorrect? (Yes, no, or unknown)?