Reader's Digest National Sweepstakes Has a Policy That No Employees

Reader's Digest National Sweepstakes has a policy that no employees or their family members are eligible to win the big sweepstakes. Why was this policy likely implemented?

A) to shrink the pool of possible winners, which increases each individual's odds of winning
B) to prevent employees from accepting gifts or bribes from other employees
C) to avoid an apparent conflict of interest
D) to satisfy the families of Reader's Digest employees