A contract bid is digitally signed and electronically mailed The PRIMARY advantage to using a digital signature is that

A contract bid is digitally signed and electronically mailed The PRIMARY advantage to using a digital signature is that
A . any alteration of the bid will invalidate the signature.
B . the signature can be authenticated even if no encryption is used,
C . the bid cannot be forged even if the keys are compromised.
D . the bid and the signature can be copied from one document to another

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Answer: B