Which of the following security controls would BEST reduce the risk of exposure?

A company has created a policy to allow employees to use their personally owned devices. The Chief Information Officer (CISO) is getting reports of company data appearing on unapproved forums and an increase in theft of personal electronic devices .

Which of the following security controls would BEST reduce the risk of exposure?
A . Disk encryption on the local drive
B . Group policy to enforce failed login lockout
C . Multifactor authentication
D . Implementation of email digital signatures

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Answer: A