11. A college wants to have an ice cream eating contest. The organizers advertise the contest after football practice when the football players are eating. How is randomization NOT applied in this situation?

(There may be more than one correct answer.)
A) The organizers can choose those who participate.
B) There is no process by which the organizers are choosing the participants.
C) The organizers cannot choose the sample or decide how much ice cream everyone eats.
D) The organizers aren’t asking people from the nearby colleges.
E) The organizers are not controlling who volunteers.

I think the answer is B, C, and E but I am not sure. Please help answering both questions