4. What is the "rule of thumb" {general practice) with regard to the assessment of notiCe? a. That an employee is given one month's notice for each year of Service if they were over the age of 50 when they were terminated b. That an employee is given one month's notice for each year of service they performed after having reached the age of 50 c. That an employee is given one month's notice for each year of service which is adjusted upward or downward if special factual circumstances are involved