This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
A 8O year old female present with progressive loss of memory, difficulty in recalling names, difficulty in speech and irritability. Along with neurofibrillary tangles what will be found in brain 
Select and explain. 
A. Beta amyloid, B. Ceramidease, C. Lewy bodies, D. Pick's bodies
A: Beta amyloid
Answer: A: Beta amyloid 
Explanation: harrison's principles of internal medicine 17th edition. *microscopic findings in alzheimer's disease include neuritic plaques containing A beta amyloid silver staining neurofibrillary tangles in neuronal cytoplasm.