Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Randomized, Double-Blind, Placebo-Controlled Evaluation of the Safety and Efficacy of Memantine in Patients With Moderate-to-Severe Dementia of the Alzheimer's Type
Brief Summary: The objective of this study is to evaluate the safety, tolerability, and efficacy of memantine compared to placebo in outpatients diagnosed with moderate-to-severe dementia of the Alzheimer's type on a concurrent acetylcholinesterase inhibitor (AChEI).


Options:
A: Inclusion Criteria:

* Ambulatory patients aged \>/= 50 years
* Diagnostic evidence of probable Alzheimer's disease consistent with criteria from the National Institute of Neurological and Communicative Disorders and Stroke-Alzheimer's Disease and Related Disorders Association (NINCDS-ADRDA) and the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR)
* Confirmatory magnetic resonance imaging (MRI) or computed tomographic (CT) scan within the prior 12 months.
* Mini-Mental State Examination (MMSE) scores \>/= 3 and \</= 14 at Screening (Visit 1) and Baseline (Visit 2)
* Ongoing daily acetylcholinesterase inhibitor (AChEI) therapy at a stable dose for at least 3 months prior to Screening (Visit 1). It is preferred that patients continue to receive the same AChEI therapy for the duration of the study.

Exclusion Criteria:

* Patients with a modified Hachinski Ischemia Score greater than 4 at Screening.
* Patients who have taken memantine within one month of Screening (Visit 1)
* Patients who have a known hypersensitivity to memantine, neramexane, rimantadine, or amantadine.
* Patients whose AChEI therapy is likely to be interrupted or discontinued during the course of the study.
* Patients who are receiving therapy with more than one AChEI.
* Patients with computed tomography (CT) or magnetic resonance imaging (MRI) evidence of hydrocephalus, stroke, a space-occupying lesion, cerebral infection, or any clinically significant central nervous system disease other than Alzheimer's disease.
* Patients with a DSM-IV Axis I disorder other than Alzheimer's disease, including amnestic disorders, schizophrenia or schizoaffective disorder, bipolar disorder, current major depressive episode, psychosis, panic, or post-traumatic stress disorder.
* Patients who, in the clinician's judgement, are likely to be placed in a nursing home within the next 6 months.
* Patients who had evidence of other neurological disorders that included, but were not limited to, stroke, Parkinson's disease, seizure disorder, or head injury with loss of consciousness within the prior 5 years
* Patients who had dementia that was complicated by other organic disease
* Patients who had dementia complicated by the presence of predominant delusions
B: Inclusion Criteria:

* Outpatients
* diagnosed with mild to moderately-severe, probable or possible AD, established in accordance with the criteria defined by the National Institute of Neurological and Communicative Disorders and Stroke and Alzheimer's Disease Related Disorders Association or the Diagnostic and Statistical Manual, Fourth Edition
* living with or have regular and frequent visits from a responsible caregiver.

Exclusion Criteria:

* Neurodegenerative disorders other than AD, such as Parkinson's Disease, Frontotemporal Dementia or Huntington's disease
* Any of specified conditions which may contribute to dementia
* any of specified coexisting diseases, including significant cardiovascular disease.
C: Inclusion Criteria:

* Diagnosis of Alzheimer's type dementia, rated as severe
* progressive worsening of memory and other cognitive functions
* brain imaging (CTor MRI scan) within last 3 years
* ability to be mobile (aided or unaided) with sufficient vision and hearing to comply with testing.

Exclusion Criteria:

* Dementia caused by cerebrovascular disease
* disturbances of consciousness, delirium, psychosis
* severe aphasia
* or major sensorimotor impairment
* cognitive impairment due to acute cerebral trauma, hypoxic cerebral damage, vitamin deficiency, infections, primary of metastatic cerebral neoplasia, endocrine or metabolic disease or mental retardation, pregnant or nursing women or those without adequate contraception.
D: Inclusion Criteria:

* dementia diagnosis
* advanced cognitive impairment
* feeding problem
* age \>= 65
* surrogate decision maker

Exclusion Criteria:

* feeding tube decision made
* hospice
* BMI \> 26
* major psychosis or developmental delay

Answer: A