This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
Which body fluid has maximum HIV load? 
Select and explain. 
A. Urine, B. blood, C. Breast milk, D. Saliva
B: blood
Answer: B: blood 
Explanation: virus has been found in greatest concentration in blood,semen,CSF lower concentration have been detected in tears,saliva,breast milk,urine,cervical and vaginal secretions also isolated in brain tissue,lymph node,bone marrow cells,skin (park edition 23 page 345)