Research shows that proper rest can improve work efficiency. When completing a complex and difficult task, you can take proper rest and do simpler things. Continue to work later, which can improve work performance by 40% The CEO of the company applied this conclusion to the company, increasing the rest time of employees, but the product performance did not increase, but it decreased significantly. Which of the following, if true, would best explain the above contradiction? ["Some departments of the company do not strictly implement the boss's rest plan.", 'Some employees want to work during the break, and want to take a break when working.', "The company's sales performance has been poor in recent times and there has been no significant growth.", "The company's production is all assembly line operations, and employees do a single mechanical action."]