Cholinesterase Inhibitors Can Help People with Alzheimer's for Two or Three

Multiple Choice

Cholinesterase inhibitors can help people with Alzheimer's for two or three years only because ________.

A) they modestly reduce some of the superficial symptoms but later the degenerative process becomes overwhelming
B) later in the progression neurotransmitter dopamine leaks out of neurons and can cause further damage
C) later in the progression specific genes are activated preventing any beneficial action
D) later in the progression much higher doses would be required, incompatible with life