The correct response is:
With probable cause, there is actual knowledge that a crime has been committed; with reasonable suspicion, there is not actual knowledge.
Probable cause refers to a reasonable belief, based on facts, that a crime has been committed, which is necessary for obtaining search warrants or making arrests. Reasonable suspicion is a lower standard that allows law enforcement to briefly detain a person or make an inquiry based on specific, articulable facts suggesting that a person may be involved in criminal activity.