Which of the following statements is not true regarding asymmetric encryption?

A$.$Everyone generally has access to the public key and can use it at any time to validate or reverse operations performed by the private key.

B$.$If the holder of the private key encrypts something with the private key, anyone with access to the public key can decrypt it$.$

C$.$Anyone who has access to the public key can encrypt data, but only the holder of the corresponding private key can decrypt it$.$

D$.$The key pairs generated by asymmetric encryption systems are known as symmetric keys.