f ( xo +h ) - f(xp ) A continuous curve y = f(x) has a vertical tangent at the point where x = X, if lim = 00 Or - CO. h-0 h UIIN a. Graph the curve y = 5x - 4x. Where does the graph appear to have vertical tangents? b.Confirm your findings in part (a) with limit calculations. . . . O A. Using the graph of the function, there appears to be vertical tangent(s) at x = (Use a comma to separate answers as needed.) B. There is no vertical tangent. b. Confirm your findings in part (a). Select the correct choice below and fill in the answer box(es) to complete your choice. O A. There is a vertical tangent because at x = the limit as h approaches 0 is O B. There are no vertical tangents because at x = the limit as h approaches 0 from the left is not equal to the limit as h approaches 0 from the right. O C. There are no vertical tangents because at x = the limit as h approaches 0 is