Choose the best option that describes Data Encryption Standard $($DES$)$ process of message exchange?

Question $4$ options:

Message in Plaintext $64$ bit,Encryption of Message into Cipher Text $64-$bit, Identical Key used by receiving host $56-$bit key and Decryption of Message into Plaintext $64-$bit

Message in Plaintext $56$ bit,Encryption of Message Cipher Text $128-$bit,Public & Private Key sent in Message and Decryption of Message into Plaintext $64-$bit

Message in Plaintext $128$ bit,Encryption of Message Cipher Text $64-$bit,Decryption of message real time and Message received in Plaintext

Message in Plaintext $64$ bit,Encryption of Message Cipher Text $56-$bit,Identical Key used receiving host $128-$bit key and Decryption of Message into Plaintext $64-$bit

Message in Plaintext $64$ bit,Decryption of Message, Encryption of message real$-$time $56-$bit key and Decryption of Message into Plaintext $56-$bit