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: Medicine
All of the following are features if CD4 count drop below 50cells/ mmcubic, except 
Select and explain. 
A. HIV associated dementia., B. CMV retinitis., C. Disseminated mycobacterium avium intracellulare., D. None.
A: HIV associated dementia.
Answer: A: HIV associated dementia. 
Explanation: None