Which of the following is a true statement regarding sources/sinks?
A. Data must originate outside a system from one or more sources.
B. The system must produce information to one or more sinks.
C. Sources/sinks are always outside the information system and define the boundaries of the system.
D. If any processing takes place inside the source/sink, we are not interested in it.
E. All of the above are true statements.
Answer E