Which of the following is a example of choosing a random sample a target population of 100 students of which 40 are boys and 60 are girls?

A. choose every other person on a alphabetical list of names

B. choosing every 10th person on the list

C. separating the group into groups of boys and girls and randomly choosing 5 boys and 5 girls from each group

D. tossing a number cube for each name on the list and choosing those names who correspond with 2 ,4 , or 6