Which of the variables meet the conditions for a binomial distribution? Select all that apply.

a. The number of people in a family of size 4 who go to church on a given Sunday, when any one of them goes 50% of the time in the long run.

b. The number voting for the Democratic candidate out of the 100 votes in the first precinct that reports results, when 60% of the population voted for the Democrat.

c. The number of females in a random sample of 4 students from a class of size 20, when half the class is female.

d. The number with iron deficiency in a random sample of 3 adolescent girls from the United States, when 10% of adolescent girls have iron deficiency.

e. The number belonging to the rotary club in a random sample of 10 people from a service organization with 204 members, when 50 of the members of the service organization belong to the rotary club.