What Is the Main Reason the Use of a Stored

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.