Before the Introduction of a Spreadsheet for Salespeople and Sales

Multiple Choice

Before the introduction of a spreadsheet for salespeople and sales managers,its features were presented to a group of potential consumers to allow them to compare alternative views of the spreadsheet in use on computer networks.Initially,group members expressed distrust in networks and nervousness about what other people would do to their spreadsheets.After using a program prototype,prospects were delighted with the product.What is this stage of new-product development called?

A) prototype innovation
B) concept testing
C) market testing
D) idea diffusion