11. In cell N2, enter a formula using the IF function and a structured reference to determine if Adam Moriarty is a Senior Staff member. a. The IF function should rst determine if the staff member's Service Years is greater than 3. Remember to use a structured reference to the Service Years column. b. The function should return the text Senior if the staff member's Service Years is greater than 3. c. The function should return the textjunior if the staff member's Service Years is not greater than 3