Which of the Following Statements Are True in Regard to Neurocognitive

Which of the following statements are true in regard to neurocognitive disorders?

A) Many are reversible when the cause is resolved or eliminated.
B) Unlike traumatic brain injury, a static disorder, most neurocognitive disorders are progressive and eventually lead to death.
C) Depression and delirium are difficult if not impossible to distinguish from dementia.
D) Personal history is a minor piece and laboratory tests are a major piece of the comprehensive medical evaluation.