This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
Rivastigmine and Donepezil are drugs used predominantly in the management of which of the following conditions? 
Select and explain. 
A. Depression, B. Dissociation, C. Delusions, D. Dementia
D: Dementia
Answer: D: Dementia 
Explanation: In Alzheimer's disease the most common cause of dementia, there is a reduction in the activity of acetylcholine within the brain due to loss of cholinergic activity within the brain due to loss of cholinergic neurons in the nucleus basalis of Meyne . Both Rivastigmine and Donepezil are cholinesterase inhibitors used in the management of dementia. These drugs reduce the degeneration of acetylcholine by inhibiting the enzyme Acetyl cholinesterase.Ref: Alzheimer's Disease And Dementia in Down Syndrome And Intellectual Disabilities By Vee P. Prasher page 85.