Find the vertical asymptotes and the nonvertical asymptotes for the graph of the function. Do not sketch the graph. f(x) = 4x x-9 If there are any vertical asymptotes, what are they? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. The vertical asymptote(s) is/are x = (Simplify your answer. Use a comma to separate answers as needed.) OB. There are no vertical asymptotes.