Under the standard of due care, failure to achieve the minimum standards would be considered

A.
Negligent

B.
Unethical

C.
Abusive

D.
Illegal

Explanation:
Due Care: care which an ordinary prudent person would have exercised under the
same or similar circumstances. “Due Care” and “Reasonable Care” are used interchangeably. -Ronald Krutz The CISSP PREP Guide (gold edition) pg 896