Which of the following choices can be considered binomial random variables? Choose all answers that apply: Choose all answers that apply: (Choice A) A container holds 20 pens, half of which are red. Select an SRS of 5 pens and let Q= equals the number of red pens obtained. (Choice B) B A container holds 1000 pens, half of which are red. Select an SRS of 5 pens and let S= equals the number of red pens obtained. (Choice C) C A container holds 100100100 pens, half of which are red. Select an SRS of 5 pens and let R, equals the number of red pens obtained.