A Certified Protection Officer is conducting a risk assessment for a new data center. The principle of 'layered security' is applied. Which of the following best illustrates this principle?
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A
Implementing a single, high-tech firewall to protect the network.
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B
Relying solely on armed guards to patrol the perimeter.
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C
Using a combination of fences, access control, CCTV, and intrusion detection systems.
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D
Conducting background checks on all employees once at the time of hiring.