Which of the Following Is a Valid Observation About Encryption

Multiple Choice

Which of the following is a valid observation about encryption?

A) Encrypted messages cannot be deciphered without the decoding key.
B) Encryption is used for data enhancement rather than data protection.
C) Encryption is performed only after the messages enter the network.
D) The encryption approach is not dependent on the type of data transmission.
E) Encryption implementation is an expensive process and needs an authentication from a relevant authority.