Why is a mandatory practice to review the service manual prior to replacing or reseating components on a Dell EMC PowerEdge server?

Why is a mandatory practice to review the service manual prior to replacing or reseating components on a Dell EMC PowerEdge server?
A . Service manual provides vital information on which live wires in the system to avoid, to ensure electric shock does not occur
B . Service manual describes how to reconfigure the server for optional performance-boosting settings, increasing efficiency
C . Service manual covers crucial cable routing and special part handling instructions
D . Service manual gives detailed instructions at which firmware levels the components should run

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Answer: C