The Human Resources Department of a Large Corporation Maintains Records

The Human Resources Department of a large corporation maintains records on its employees. Data are maintained for the following variables: Age, Employment Category, Education, Whether or not the employee participates in a wellness program, and Paycheck benefit deductions. Which of these variables are categorical?

A) Age, Employment Category, and Education
B) Employment Category, Education, and Whether or not the employee participates in a wellness program
C) Education, Whether or not the employee participates in a wellness program, and Paycheck benefit deductions
D) Age only
E) Education only.