In Reviewing Changes in the Older Adult,the Nurse Recognizes That

In reviewing changes in the older adult,the nurse recognizes that which of the following statements related to cognitive functioning in the older client is true?

A) Delirium is usually easily distinguished from irreversible dementia.
B) Therapeutic drug intoxication is a common cause of senile dementia.
C) Reversible systemic disorders are often implicated as a cause of delirium.
D) Cognitive deterioration is an inevitable outcome of the human aging process.