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: Pathology
The Earliest feature Tuberculosis is: 
Select and explain. 
A. Caseation, B. Lymphocytosis, C. Giant calls (Langerhans), D. Granuloma
B: Lymphocytosis
Answer: B: Lymphocytosis 
Explanation: Lymphocytosis