Which of the Following Is the Primary Reason for Implementing

Which of the following is the primary reason for implementing layered security measures in a cybersecurity architecture?

A) It increases the number of controls required to subvert a system
B) It decreases the time a CERT has to respond to a security incident.
C) It alleviates problems associated with EOL equipment replacement.
D) It allows for bandwidth upgrades to be made without user disruption.