Probability distribution of a student will get score A = 30%, B = 45%, C = 15% , Or D = 10%. If 7 students were selected at random, what is the probability that: A. More than 4 students will get score A or C. B. at least 5 students will get D. C. less than 3 students will get B or C. D. all of them will get A or B or C