Mark Mitton, the liaison to the IS department, has eliminated all but the best three systems. Mark developed a list of required features, carefully reviewed each system, talked to other users, and interviewed appropriate systems representatives. Mark used a point-scoring system to assign weights to each requirement. Mark developed Table 21-4 to help him select the best system. Required a. Use a spreadsheet to develop a point-scoring matrix and determine which system Mark should select. b. Susan Shelton did not agree with Mark