Which of the following statements about Public Key Infrastructure (PKI) are true? Each correct answer represents a complete solution. Choose two.

Which of the following statements about Public Key Infrastructure (PKI) are true? Each correct answer represents a complete solution. Choose two.
A . It uses symmetric key pairs.
B . It provides security using data encryption and digital signature.
C . It uses asymmetric key pairs.
D . It is a digital representation of information that identifies users.

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Answer: BC