Provide an appropriate response.
Given lim as x approaches 0- f(x) = Ll , lim as x approaches 0+ f(x) = Lr , and Ll ≠ Lr, which of the following statements is true?
I. lim as x approaches 0 f(x) = Ll
II. lim as x approaches 0f(x) = Lr
III. lim as x approaches 0 f(x) does not exist.
a. I
b. II
c. III
d. none