A firm has a training program for a certain operation

10. A firm has a training program for a certain operation. The progress of trainees is carefully monitored. An established standard requires a trainee to be able to complete the sixth rep- etition of the operation in six hours or less. Those who are unable to do this are assigned to other jobs.

Currently, three trainees have each completed two repetitions. Trainee A had times of 9 hours for the first and 8 hours for the second repetition; trainee B had times of 10 hours and 8 hours for the first and second repetitions; and trainee C had times of 12 hours and 9 hours.

Which trainee(s) do you think will make the standard? Explain your reasoning.