(1 point) Why is the following function discontinuous at x = 1? 1+x2 ifx

(1 point) Why is the following function discontinuous at x = 1 Q (a) f(l) does not exist. (b) lim f (x) does not exist (or is infinite). (c) Both (a) and (b). (d) f(l) and lim f(x) exist, they are not equal. d f(x) = if x < 1 if x 2 1