You are a technical writer in a large company who is working on a training manual to help new users learn the company's computer system. Employees will use your manual in training seminars taught by your company's trainers. The manual will also serve as an on-the-job reference later. Both of the system analysts who designed the computer system and the trainers will comment on your draft. The trainers would be classified as what kind of audience for your manual?
A. Watchdog
B. Gatekeeper
C. Primary
D. Secondary