Problem 9. The plot below shows the marginal cost (in red) and marginal revtrose (is bloe) from sellinge q units of a certain prodoct, ss functions of q.For each event below, indicate the q-value(s) where it occurk, of atate that there are noeen. Provide brief justification in terms of the behavior of MR and MC obecrvalie froen the graphas above.a) The cost function hes a local minimumb) The coet function has an inflection poistc) The revenue function has a locat moximumd) The reveroe function has a local minimume) The profit function has a local minimumf) The profit function has a local maximum(Note: All relenant points on the graphas have been marked with a dot, but not every poiat in necessarily significant.)