Bo and Clancy Decide to Do Business as Dynamo Production

Bo and Clancy decide to do business as Dynamo Production Associates.To be a partnership,this association can result from an agreement that is

A) express,but not from an agreement that is implied.
B) implied,but not from an agreement that is express.
C) oral,written,or implied by conduct.
D) written,but not from an agreement that is oral or implied.