Which of the following analysis techniques derive system models from existing system or discovery prototypes ?
		A. rapid architected analysis 
B. object-oriented analysis
C. data modeling
D. discovery prototyg
		A. rapid architected analysis 
B. object-oriented analysis
C. data modeling
D. discovery prototyg
		A. requirements management
B. sampling of existing documentation, forms and files 
C. requirements discovery
D. problem discovery and analysis 
		A. problem analysis phase
B. logical design phase
C. scope definition phase
D. requirements analysis phase  
		A. serves as a training mechanism for users
B. allows users and developers to experiment with the software and develop an understanding of how the system might work
C. aids in building system test plans and scenarios
D. All of the above 
		A. randomization
B. stratification
C. people sampling
D. work sampling 
		A. information system 
B. Knowledge system
C. Database system
D. Computer system
		A. Planning
B. Organizing
C. Leading
D. Controlling