Several Artists in Victoria,British Columbia,have Created an Arrangement to Sell

Several artists in Victoria,British Columbia,have created an arrangement to sell their paintings.They have set up an art gallery in downtown Charleston,so tourists and art lovers can look at their paintings and buy the ones they like.Each artist takes a turn acting as the sales clerk at the gallery.In terms of the marketing channel,the artist who is on duty in the gallery is acting as a(n) :

A) ultimate consumer.
B) retailer.
C) wholesaler.
D) brokerage firm.