Which of the following is the BEST explanation of why control diversity is important in a defense-in-depth architecture?

Which of the following is the BEST explanation of why control diversity is important in a defense-in-depth architecture?
A . Social engineering is used to bypass technical controls, so having diversity in controls minimizes the risk of demographic exploitation
B . Hackers often impact the effectiveness of more than one control, so having multiple copies of individual controls provides redundancy
C . Technical exploits to defeat controls are released almost every day; control diversity provides overlapping protection.
D . Defense-in-depth relies on control diversity to provide multiple levels of network hierarchy that allow user domain segmentation

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Answer: D