human
A said: B is lying; B said: C is lying; C said: A and B are lying. Only one of them told the truth, please analyze who told the truth. Please list the truth table to describe the problem
gpt
--- Reasoning ---
1. Is the question multiple-choice question?
No
2. Is it implied multiple-choice question?
No
3. If two experts were independently asked the question, will the final answer be exactly the same?
Yes

--- Answer ---
grounded