Answer: C - outside of the production area.
Step-by-step explanation:
The vestibule delivery system is a T&D delivery system that does not take place inside the production area. It is actually outside the production area and is on equipment that looks almost identical/similar to the same equipment used on that particular job.
This system is used to replicate the job demands of the production area. It is made up of numerous devices and programs. This is a popular system used by many larger companies all over the world.