Find f'(x) and find the equation of the line tangent to the graph of f at the indicated value of x. Find the value(s) of x where the tangent line is horizontal. f ( x) = In (2-x2 4 -x +2x ); x=1 f' ( x ) = The equation of the line tangent to the graph of fat x - 1 is y - Select the correct choice below and fill in any answer boxes in your choice O A. The value(s) of x where the tangent line is horizontal is/are (Simplify your answer. Use a comma to separate answers as needed.) O B. The tangent line is never horizontal. X More