3 2- -4 -3 -2 -1 3 A 5 ON -1- -2+ -3- -4- 8. From the above graph of y = f(r), answer the following questions: (a) Find r-value(s) at which f has a removable discontinuity. (b) Find r-value(s) at which f has a jump discontinuity. (c) Find r-value(s) at which f has an infinite discontinuity. (d) From these discontinuous points, find r-value(s) at which f is left-continuous. (e) From these discontinuous points, find r-value(s) at which f is right-continuous