In Conference Selling

In conference selling,

A) buyers and sellers meet through a technology-based forum (telephone or video conference call such as WebEx,etc. ) because person-to-person meetings are too expensive due to the cost of air travel.
B) the sale has already been finalized but the buyer and seller meet to discuss delivery details.
C) a salesperson and other company resource people meet with buyers to discuss problems and opportunities.
D) a company team conducts an educational program for a customer's technical staff,describing state-of-the-art developments.
E) a form of mass selling via electronic marketplaces such as eBay,Facebook,or Salesforce.com.