Green is a talented artist and he creates landscape paintings while working in the open air. Green originally started selling his works at flea markets and small craft fairs. The popular response encouraged him to create a website and start a mail-order business. He outsources some of the printing responsibilities, and hired someone part time to help him ship out his work to website-based customers. He does not currently own permanent retail space, but he has not ruled it out. What business structures would you recommend to Green? Advise Green of the pros and cons of each structure.