Which of the following statements concerning Alberta's Employment Standards Code is TRUE? Select one: a. The Code requires the employer to provide an employee 7 days advance notice of their recall to work following a temporary layoff. b. A recall notice must be delivered by registered mail to be effective. c. To be valid, any layoff notice must state that it is a temporary layoff notice. Also it must include the date that the layoff is to commence as well as the recall date. d. Section 63 enables an employer to layoff an employee for more than 90 days provided the employer, during the layoff, makes payments for the benefit of the laid-off employee in accordance with a pension or employee insurance plan or similar plan