Give an example of a situation in which the n Superscript r formula gives the number of possible arrangements. Choose the correct answer below. A. Suppose John coaches a team of 10 swimmers, from which he must put together a 5-person relay team. How many possibilities does he have in this case? Note that in this case, nequals10 (the number of swimmers on the team) and requals5 (the number of people on the relay team). B. Suppose that a license plate can display 6 numerals. How many different 6-number license plates are possible? Note that in this case, nequals10 (the numerals 0 through 9) and requals6 (the number of numerals that the plate can display). C. A school principal needs to schedule 5 different classes in 5 different time periods. How many schedules are possible? Note that in this case, nequals5 (the number of classes) and requals5 (the time periods). D. Suppose Mary selects 4 different flavors of ice cream in a shop that carries 8 flavors. How many flavor combinations are possible? Note that in this case, nequals8 (the number of flavors available) and requals4 (the number of flavors selected)