Which of the Following Is a Difference Between a Stop

Which of the following is a difference between a stop and an arrest?

A) A stop involves existence of a probable cause, whereas an arrest involves reasonable suspicion.
B) An arrest is the act of apprehending a suspect for the purpose of detaining him, whereas a stop is a relatively brief intrusion on a citizen's rights.
C) A stop requires a warrant, whereas an arrest can always be made without a warrant.
D) An officer intends to investigate suspicious activity during an arrest, whereas he or a she intends to make a formal charge during a stop.