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.