An exam was given to a group of freshman and sophomore students. the results are below: freshman: 106 got a’s, 130 got b’s, and 149 got c’s. sophomore: 192 got a’s, 118 got b’s, and 168 got c’s. if one student is chosen at random from those who took the exam, find the probability that: b)the student was a freshman or received a c . c) the student was a sophomore, given they got a c. d) the student got an a, given they are a freshman. *round to 4 decimal places as needed*