Problem 4: Rules of Inference (15 points) What rule of inference is used in each of these arguments? (a) Kangaroos live inAustralia and are marsupials. Therefore, kangaroos are marsupials. (b) It is either hotter than 100 degrees today or the pollution is dangerous. It is less than 100 degrees outside today. Therefore, the pollution is dangerous. (c) Linda is an excellent swimmer. If Linda is an excellent swimmer, then she canwork as a lifeguard. Therefore, Linda can work as a lifeguard (d) Steve will work at a computer company this summer. Therefore, this summer Steve will work at a computer company or he w be a beach bum. (e) If I work all night on this homework, then I can answer all the exercises. If I answer all the exercises, I wl understand the material. Therefore, if I work all night on this homework, then I wil understand the material