which of the following statements about Alzheimer's disease is incorrect? in a healthy brain, a secretase cleaves in the

[answerhappygod]

which of the following statements about Alzheimer's disease is
incorrect?
in a healthy brain, a secretase cleaves in the middle of Ab to
release two soluble pieces which get eliminated
cleavage by b and y secretases leads to the generation of b
amyloid which accumulates to form hard insoluble plaques
tau protein responsible for the synthesis of neurotransmitter
acetylcholine is reduced