Use reasoning to lead to the answer of the following question:
If a mechanic attaches a chain to your bumper what is he likely driving?\nOptions:\n- obesity\n- bicycle\n- motorbike\n- jewelry store\n- tow truck
 Reasoning process:
User
Tow truck has a bumper. A mechanic handles a tow truck. A tow truck is a vehicle. Therefore, the final answer is tow truck.
Assistant