When Alex returns to the factory after the boy scout hike, he tests a theory about dependent events and statistical fluctuations. The parts have to go through Pete Schnell's fabricating department and then the robot's department before shipment. Both departments are capable of producing the needed $25$ parts per hour, but Pete' department averages $25$ parts per hour while the robot's department produces exactly $25$ parts per hour. The order of $100$ parts does not get finished by the $5$ pm deadline. The concept of dependent events and statistical fluctuations is illustrated by this scenario. Which statement best describes a root cause of the problem.

Group of answer choices

The union rules force workers to take breaks

Pete's department has variable output but the robot has a fixed capacity

The robots are unreliable

Pete's workers are lazy

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