Which of the following statements best describes a certification authority? 

Answer options:

A. A certification authority is a technique to authenticate digital documents by using computer cryptography.
B. A certification authority is a type of encryption that uses a public key and a private key pair for data encryption.
C. A certification authority is an entity that issues digital certificates for use by other parties.
D. A certification authority is a type of encryption that uses a single key to encrypt and decrypt data.

C