Question

I have the answer, will someone explain it though?
If limit X-3 f(x)=7 , which of the following must be true?
is continuous at x=3
is differentiable at x=3
f(3)=7
answer is None


Answer 1

It was supposed to say, I have the answer, will someone explain it though?
If limit X->3 f(x)=7 , which of the following must be true?
A. f is continuous at x=3
B. f is differentiable at x=3
C. f(3)=7
answer is None