When Jack implements security for his online toy selling site, he deploys Digital signatures. This will ensure that:

When Jack implements security for his online toy selling site, he deploys Digital signatures. This will ensure that:

A.
The customer sending the message really has the right password

B.
The customer sending the message really has received authorization

C.
The customer sending the message really is who he/she claims to be

D.
The customer sending the message really is using secure channel