Which of the following is a random sample of the population of people who subscribe to a particular magazine?
A) the first 20 names on the list of subscribers
B)the first name on the list of subscribers and every 10th person's name after that.
C) the list of subscribers separated into two groups, males and females, and the first 10 names from each group.
D) the 20th name on the list of subscribers and every 10th name after that