Lumpy Mattresses encountered falling revenues because a highly competitive market. To reduce their losses, management decides to close its North Dakota warehouse, laying off 120 workers from the company's 1000 employee workforce. Under the Workers Adjustment Retraining and Notification Act, what must Lumpy Mattresses do? It must provide all the employees with exit interviews . It must explain employment -at-will principles to the employees It must request employeesconsent before reviewing their job records.It must explain employment- at-will principles to the employees It must give the employees 60 daysnotice or pay in lieu of notice before it can begin layoffs