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
True about miliary tuberculosis -a) Occurs following primary reactivationb) Occurs following secondary reactivationc) Both primary and secondary reactivation d) Commonly affects liver, kidney and spleen 
Select and explain. 
A. ab, B. bc, C. acd, D. abc
D: abc
Answer: D: abc 
Explanation: None