Which statement about digitally signing a document is true?

Which statement about digitally signing a document is true?
A . The document is hashed and then the document is encrypted with the private key.
B . The document is hashed and then the hash is encrypted with the private key.
C . The document is encrypted and then the document is hashed with the public key
D . The document is hashed and then the document is encrypted with the public key.

Answer: B