This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
In Alzheimer&;s disease (AD) which of the following is not seen: 
Select and explain. 
A. Aphasia, B. Acalculia, C. Agnosia, D. Apraxia
C: Agnosia
Answer: C: Agnosia 
Explanation: Aphasia, Apraxia, Acalculia and Agnosia may all be seen in Alzheimer&;s Dementia. Agnosia in Alzheimer&;s disease usually presents late in the disease and is not included in the ICD-10 Diagnostic criteria for dementia in Alzheimer&;s disease with early onset and hence may be selected as the single best answer by exclusion REF: Harrison book of internal medicine 21ST EDITION