Which two statements are true about public key digital signatures applied to Web services? (Choose two)

Which two statements are true about public key digital signatures applied to Web services? (Choose two)

A.
The receiver verifies that the message matches the digital signature using its own private key.

B.
The sender creates a digital signature using its own private key and sends that signature along with the original document.

C.
The sender creates a digital signature using its own public key and sends that signature along with the original document.

D.
The receiver verifies that the message matches the digital signature using the sender’s public key.