What Is the Most Significant Personal Advantage an Officer Has

What is the most significant personal advantage an officer has when making an arrest with a valid warrant over making that arrest without one?

A) not being civilly liable for false arrest if the arrest was in fact unjustified.
B) not being responsible for the degree of force used to make the arrest.
C) not being likely to arrest the wrong person.
D) being able to arrest outside his or her venue.