What is the main reason the use of a stored biometric is vulnerable to an attack?

A.
The digital representation of the biometric might not be unique, even if the physical characteristic is unique.

B.
Authentication using a stored biometric compares a copy to a copy instead of the original to a copy.

C.
A stored biometric is no longer “something you are” and instead becomes “something you have”.

D.
A stored biometric can be stolen and used by an attacker to impersonate the individual identified by the
biometric.