The Disadvantage of the Four-Model Approach Is That ____

Multiple Choice

The disadvantage of the four-model approach is that ____.

A) it gives an unclear picture of the current system functions before any modifications or improvements are made
B) the requirements of a new information system always are different from the current information system
C) additional time and money are required to develop a logical and physical model of the current system
D) it does not take additional steps to avoid mistakes made earlier in systems development