The Nurse Is Providing Instructions to Newly Hired Graduates for the Mini-Mental

The nurse is providing instructions to newly hired graduates for the mini-mental state examination (MMSE) . Which statement best describes this examination?

A) Scores below 30 indicate cognitive impairment.
B) The MMSE is a good tool to evaluate mood and thought processes.
C) This examination is a good tool to detect delirium and dementia and to differentiate these from psychiatric mental illness.
D) The MMSE is a useful tool for an initial evaluation of mental status. Additional tools are needed to evaluate cognition changes over time.