The graph of the function fis shown above. Which of the following statements is true? fis discontinuous at x = 0 because lim x -> 0 f(x) does not exist. fis discontinuous at x = 3 because lim x 3 f(x) ne f(3) . fis discontinuous at x = 5 because lim f (x)does not exist. 5 fis discontinuous at x = 6 because lim x 6^ - f^ prime (x) ne lim x -> 6 f' * (x)