In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase. A little bird told me

• A. Have a strong network of spies from where you get reliable information from which you can profit.
• B. Used to indicate that the speaker knows something but chooses to keep the identity of their informant secret.
• C. A secret which is known by everybody.
• D. A person unknowingly letting out a secret.