【单选题】Although the top men in smuggling business must work together, most of a syndicate's small fry, especially the mules, know only their immediate contacts. If caught, there is little they can give away....
A.
A person who sends smuggling goods for a syndicate is called mule.
B.
A person in charge of smuggling goods is called mule.
C.
A person who makes delivery for a syndicate is called mule.
D.
A person who receives instructions from a smuggler is called mule.