A Postcard Pack Is

A postcard pack is:

A) a group of companies that sell only by mail
B) a group of salespeople who attempt to sell to all prospects in a given area in a short time period (usually about a week)
C) a method of packaging items together in a very small shipping container, thereby allowing a cost saving in shipping costs
D) a series of several mailings that a salesperson can send to a prospect over a period of weeks to persuade the prospect to make an appointment to see the salesperson
E) a package of postcards from a number of different firms sent as a group that allow recipients to fill in their names and addresses to request more information about the products advertised