Components A, B, and C Are Connected in Series

Components A, B, and C are connected in series. Component D is connected in parallel to component B. Which of the following statements is TRUE?

A) The system works only if A works, B or C works, and D works.
B) Component B must work for the system to work.
C) The system works when A works, C, works, and either B or D works.
D) Components B and C are backups to A.
E) The system works if D works, and any of A, B, or C works.

Correct Answer:

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