Ava is going to survey the students in her middle school to find out what their favorite video game is. She is going to choose every third student listed on each teacher’s homeroom roster. Which statement is true?

A. Ava’s sample is not random. Choosing the first three students on each teacher’s roster provides a better random sample of the middle school population.
B. Ava’s sample is random. Choosing every third student on each teacher’s roster provides a random sample of students in the middle school.
C. Ava’s sample is not random. Randomly choosing three students from each homeroom who own a video game system provides a better random sample.
D. Ava’s sample is not random. Randomly choosing students from different homeroom classes provides a better random sample of students in the middle school.