Which of the Following Statements About the Eligibility Requirements for Group

Which of the following statements about the eligibility requirements for group insurance is true?

A) Most plans cover both full-time and part-time employees.
B) An employee must be actively at work on the day the employee's group insurance becomes effective.
C) An employee who signs-up for insurance during an eligibility period must furnish evidence of insurability.
D) One purpose of a probationary period is to determine whether the employee is healthy enough to be covered under the group health insurance plan.