If two engines process four submitted jobs at the same time, what happens?

If two engines process four submitted jobs at the same time, what happens?

• A. Two processed, two sit in a queue until an engine is free.
• B. Two jobs are processed. The other two sit in a queue until an engine becomes free.
• C. Two extra engines will fire up automatically to process all four jobs.
• D. The four jobs will be processed simultaneously, sharing the two engines.

Answer: (A)