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
In primary T.B. seen - 
Select and explain. 
A. Ghon's focus, B. Pleural effusion, C. Miliary mottling, D. Fibrosis
A: Ghon's focus
Answer: A: Ghon's focus 
Explanation: Primary T.B. includes.


An area of grey-white (size of approx. 1 - 1.50 cm) inflammatory consolidation - called ghon's focus.
Lymph node.
Lymphatics and lymphatic channel.


Cavity and fibrosis is seen in secondary T.B.