Pls explain how you get your answer! I'm quite confused :(

Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

Free points also plz look my profile and answer really stuff