During a production audit at PlastiPharm, a client noted that the number of medical device bags produced during his hour of observation was higher than what was reported for the eight$-$hour shift $($multiplying the hourly output by eight$).$ Which of these explanations best explains why there is a difference?

The goal for the eight$-$hour shift is always lower than the hourly output to allow employees to take breaks and eat a meal.

The clean room employees were aware a client was observing them and made sure everything ran smoothly for the audit.

Differing conditions in the clean room can create variances in the process, which results in lost production and reduces overall shift outputs.

What the client saw during the hour of observation might not have been a typical production hour and should not be used as a measurement of output.