Suppose people in your town are being surveyed about shopping habits. Which one of the following situations is best modeled by a binomial model? 

A. You ask residents of your town, “Do you shop downtown at least once a month?” and count the number of people you have to ask until you get 50 to answer yes. 

B. You ask a random sample of 50 residents in your town, “Do you shop downtown at least once a month?” and you count the number who answer yes. 

C. You ask 25 random people who are walking around downtown and 25 random people who are coming out of a big-box store just outside of your town, “Do you shop downtown at least once a month?” and count the number who answered yes. 

D. You ask a random sample of 50 residents, “Which stores would you like to see added in downtown?” and you record their answers.