Explain why the function is discontinuous at the given number a. (Select all that apply.) 1 f ( x ) = if x * -4 X + 4 a = -4 if X = -4 lim f(x) and lim f(x) are finite, but are not equal. x - -4+ X- -47 Of(-4) is defined and lim f(x) is finite, but they are not equal. X ->-4 lim f(x) is not finite. x - -4 O f(-4) is undefined. none of the above X