The Principal of a Small Elementary School Wants to Select

The principal of a small elementary school wants to select a simple random sample of 24 students.
The school has 12 classrooms with 18 students in each class. She decides to randomly select two
Students from each classroom. Is this a simple random sample?

A) No, because not all combinations of 24 students could have been chosen.
B) Yes, because the students were selected at random.
C) No, because each student did not have an equal chance of being selected.
D) Yes, because a stratified sample is a type of simple random sample.
E) Yes, because each student had an equal chance to be selected.