Explain why the function is discontinuous at the given number a. (Select all that apply.) f ( x ) = _ a B-5 X + 5 V lim f(x) and lim f(x) are not finite, and are not equal. X - -5+ X- -5 lim f(x) does not exist. X - -5 f(-5) is undefined. v f(-5) and lim f(x) are finite, but are not equal. X--5 none of the above X