Rick Owns and Operates a Small Farm That Produces Vegetables

Rick owns and operates a small farm that produces vegetables and fruits. His friend Owen owns and operates a butcher shop that sells various kinds of meat. Rick often gives Owen vegetables and fruits in exchange for meat, and vice versa. This scenario best describes

A) using fiat money.
B) using "IOUs."
C) purchasing.
D) operating actions.
E) bartering.