Determine Which of the Given Procedures Describe a Binomial Distribution

Multiple Choice

Determine which of the given procedures describe a binomial distribution.

A) Observing that ten out of the next twenty customers at a grocery store checkout use a credit card given that the probability of using a credit card is 0.58.
B) Record the number of songs downloaded in a month for a group of 30 randomly selected college students.
C) Surveying customers entering a sporting equipment store until a customer responds that he or she was shopping for a bicycle.