Choose from the List Below the Best Definition of Decryption

Choose from the list below the best definition of decryption.

A) Decryptions are the algorithms used to encode a message.
B) Decryptions are the algorithms used to convert an encrypted message back to its original form.
C) Decryptions are the computer programs that act as intermediaries that contract, execute, and settle contracts.
D) Decryption is the science of using a secret code for secure data communication.