Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Multinational, Multicenter, Randomized, Double-blind, Parallel-group, Placebo-controlled Study of the Effect on Cognitive Performance, Safety, and Tolerability of SAR110894D at the Doses of 0.5 mg, 2 mg, and 5 mg/Day for 24 Weeks in Patients With Mild to Moderate Alzheimer's Disease on Stable Donepezil Therapy
Brief Summary: Primary Objective:

- To demonstrate the efficacy of at least one dose of SAR110894 (H3 receptor antagonist) in comparison to placebo on cognitive performance in patients with mild to moderate Alzheimer's disease (AD) while on stable donepezil therapy

Secondary Objectives:

* To explore the effect of SAR110894 on functional impairment, global clinical status and behavioral disturbances;
* To assess the safety/tolerability of SAR110894;
* To assess pharmacokinetic (PK) of SAR110894 and concentrations of donepezil;
* To explore caregiver time consumption and distress changes.


Options:
A: Inclusion Criteria:

* Patients residing in long term nursing home units for at least 4 weeks prior to study
* Diagnosed with probable or possible dementia according to Diagnostic and Statistical Manual of Mental Disorders (DSM-IV), FAST score \> 4
* Diagnosed with depression ≥ 4 week duration as measured by CSDD ≥ 8
* Written, informed consent provided by the participant (if they have capacity) or assent (if they do not have capacity) and a written proxy informed consent from a legally authorized representative empowered to make health-related decisions for the potential study participant

Exclusion Criteria:

* The patient is contra-indicated to study drugs of pain treatment, in another trial, or had no carer.
* Participants are ineligible if they are clinical critical (e.g. suicide risk)
* Clinician responsible for care, or study clinician considers that the patient suffers from any physical condition, which would make participation in the trial distressing or likely to increase suffering
* Advanced severe medical disease/disorder with expected survival less than 6 months or that could interfere with participation
* Psychosis or other severe mental disorder prior to dementia diagnosis
* Severe aggression (≥8) on item 3 of the NPI subscale, with aggression as the predominant symptom
* Schizophrenia, schizoaffective disorder and bipolar disorder
* Uncontrolled epilepsy
* Severe liver impairment
* Renal failure
* Severe injury or anaemia (Hb \< 8.5 mmol/l), comatose state, current enrolment in another experimental protocol
* Known allergy or adverse reaction to paracetamol or buprenorphine transdermal patch
* Advanced severe medical disease with expected survival of less than six months, severe psychiatric or neurological disorder.
* Patients with diseases that make it impossible to follow the research schedule are excluded
B: Inclusion criteria:

* Patients with diagnosis of Alzheimer's Disease (AD) (Cannot be dementia from strokes or other causes).
* Patient is on stable and well-tolerated donepezil treatment at a dose of either 5 or 10 mg daily for at least 3 months prior to screening visit.

Exclusion criteria:

* Age \<55 years old.
* Psychotic features, agitation, or behavioral problems within the last 3 months.
* Patients unable to comply with ophthalmologic monitoring.
* Lack of consistent and reliable caregiver.

The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.
C: Inclusion Criteria:

* \>= 55 Years old
* MMSE 14-26
* Prodromal Alzheimer's Disease (AD), AD or Mild Cognitive Impairment (MCI) due to AD
* Participation of a caregiver

Exclusion Criteria:

* Profound hearing or visual impairment
* Seizure Disorder
* Use of memantine (Namenda or Namzaric)
* Implantable devices (non-MR compatible)
D: Inclusion Criteria:

* mild to moderate Alzheimer's disease and related dementia (ADRD)

Exclusion Criteria:

* major organ failure,
* major illness,
* history of head injury,
* hypertension or diabetes,
* use psychotropic (sleep aid) medicine, obstructing cataracts, macular degeneration, and blindness

Answer: B