Question: Alices uses a Message Authentication Code (MAC) to communicate with Bob. Eve later claims that she sent the some message x with auth(x) to to

Alices uses a Message Authentication Code (MAC) to communicate with Bob. Eve later claims that she sent the some message x with auth(x) to to Bob but Alice claims the same. Bob can determine whether Eve or Alice sent the message.

True

False

What is the answer true or false and why??

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