The Relation Between Use Cases and Data Flow Diagrams Is

Multiple Choice

The relation between use cases and data flow diagrams is generally:

A) Use cases are developed by users and data flow diagrams are developed by systems analysts
B) Data flow diagrams are developed first and then use cases ensue
C) Use cases are developed first and then data flow diagrams ensue
D) Use cases show logical processes,while data flow diagrams show physical processes
E) There is not a relationship between use cases and data flow diagrams