Q. In system modeling :
A-Classification model;
B-Stimulus-response model;
C-Data processing model:
1-Here data-flow diagram show how data is processed at different stages;
2-Here object class/inheritance diagram show, how entities have the common characteristics;
3-Here state transition diagram shows the how the system reader to internal and external events

• (A) A-2, B-3, C-1
• (B) A-3, B-1, C-2
• (C) A-1, B-2, C-3
• (D) A-1, B-3, C-2