Which is an example of simple random sampling created from each given population? A. Of all 7th grade students in a middle school, asking the first five students who entered a classroom to name his or her favorite teacher
B. In a list of all licensed drivers in a town, dividing the names into males and females and then selecting 50 names at random from each group.
C. In a bag of more than 500 marbles, reaching into the bag and drawing out 25 marbles without looking.
D. Asking all viewers of a national reality TV show to call into the station to vote for their favorite contestant.