Which of the following is not a problem?

Question

When inspecting an exhaust system, you should verify that parts of the system are not loose, broken, or missing. The system's parts must be properly mounted and should not be rubbing against moving parts of the vehicle.

Accepted Answer

Exhaust system parts that are not leaking

Answer

Loose or broken exhaust pipes

Answer

Loose or broken mounting brackets

Answer

Exhaust parts rubbing against fuel system parts