Danny Stops Carl on the Street and Asks Carl Some

Multiple Choice

Danny stops Carl on the street and asks Carl some questions.Danny doesn't like Carl's answers and tells him so.Carl wants to walk away.Can he?

A) No,because he is under arrest.
B) Yes,because Danny had no right to ask him questions in the first place.
C) No,because he is a reasonable person who believe that he was under arrest.
D) Yes,because he is not under arrest and Danny has no probable cause to detain him further.