8. State if each scenario involves a permutation or a combination. Then find the number of possibilities. a) A team of 17 softball players needs to choose four players to refill the water cooler. b) A group of 36 people are going to run a race. The top three runners earn gold, silver, and bronze medals. c) There are 145 people at a meeting. They each shake hands with everyone else. How many handshakes were there