SCD enables engineers to: a) Establish the information boundary between the system being implemented and environment in which the system operates. b) Define all external producers of information. c) Capture detail view of the system d) Define all external consumers of information. e) A, B, and DUnder UML, engineers typically use models to: a) Show how system elements fit together b) Keep design and implementation consistent c) Hide or expose details as appropriate d) A, B and C e) None of the aboveWhich model(s) is/are considered a "Structured Approach" model? a) Use case b) DFD c) ERD d) B and C e) All of the above.