The nurse cares for a patient who is suspected of having bacterial meningitis. The patient's family asks the nurse how will the diagnosis be confirmed. How should the nurse reply?

"An MRI will show adhesions impairing the outflow of cerebral spinal fluid (CSF)."

"The lumbar puncture results will show cerebral spinal fluid (CSF) that is cloudy in appearance with raised neutrophils."

"The lumbar puncture results will show cerebral spinal fluid (CSF) that has a normal appearance with raised lymphocytes."

"An MRI will identify meninges thickening."