Which of the Following Statements Are True

Which of the following statements are true?

A) The Redundant Implementation pattern is most useful for services that possess non-agnostic service logic.
B) The Redundant Implementation pattern is concerned with eliminating single point of failure problems associated with services that are actively reused.
C) The Redundant Implementation pattern can be supplemented with the Intermediate Routing pattern, which can be applied to load balance access to a redundantly deployed service.
D) The Redundant Implementation pattern addresses issues of scalability, not issues of availability.