For each of the following situations described below, select the distribution which best models the given situation (you may need to use some distributions multiple times). Provide a very short justification for your answer.

a) In an epidemiological study of the incidence of skin cancer for those individuals who use artificial tanning procedures, a researcher randomly selected 100 of the 10,000 customers of a large tanning facility. The 100 customers were examined and the number N who had developed skin cancer was recorded. The distribution of N is is ?