A company, Tech Innovations, plans to implement a secure internal communication system for its employees. The IT department suggests using digital

certificates and PKI to ensure the confidentiality and integrity of the communications. They propose issuing digital certificates for each employee, which

will be signed by the company's own Certificate Authority $($CA$).$

What are the primary benefits of Tech Innovations using its own CA to issue digital certificates for secure internal communication?

Elimination of the need for encryption within the communication system

Direct access to employees' private keys for administrative purposes

Reduced costs and increased control over the certificate lifecycle

Automatic encryption of all messages with symmetric keys