Which of the following is a valid defense to an age-discrimination claim?

Choose One

1- The younger person whom the plaintiff claims was illegally treated better than she, is older than the complaining employee.

2-Younger persons can be preferred over persons near normal retirement age because health declines rapidly for older persons.

3-Some individuals over a particular age possess a disqualifying trait that cannot be ascertained except by reference to age.

4-It is legal to hire younger applicants when all else is equal because they will stay with the company longer than persons near normal retirement age.