Answer:
C i.e. Both is right answer.
Explanation:
Consider a vehicle needs some maintenance from a PIT shop.
The PIT shop technicians will use the floor jack to support the car along with safety stands because of safety issue. Merely a jack is not adequate for it.
However, If we are in a middle of any trip and our car tire burst out then we can use our floor jack for tire replacement.
As a conclusion, Floor jacks are best of tire replacement that doesn't require much time. Whereas if proper maintenance is required the safety stands should be used. So both technicians are right