Which of the following defines the role of a root Certificate Authority (CA) in a Public Key Infrastructure (PKI)?

Which of the following defines the role of a root Certificate Authority (CA) in a Public Key
Infrastructure (PKI)?

A.
The root CA is the recovery agent used to encrypt data when a user’s certificate is lost.

B.
The root CA stores the user’s hash value for safekeeping.

C.
The CA is the trusted root that issues certificates.

D.
The root CA is used to encrypt email messages to prevent unintended disclosure of data.