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
Miliary TB is - 
Select and explain. 
A. Primary, B. Post-primary, C. Extrapulmonary, D. None
B: Post-primary
Answer: B: Post-primary 
Explanation: Ans. is 'b' i.e., Post-primary o Miliary tuberculosis is post primary pulmonary tuberculosis and occurs in regions where 02 cocentration is high (see above explanation).