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: 
Select and explain. 
A. Occurs following primary reactivation, B. Occurs following secondary reactivation, C. Commonly affects liver, kidney and spleen, D. Both 1 and 2
D: Both 1 and 2
Answer: D: Both 1 and 2 
Explanation: Systemic miliary tuberculosis ensues when the organisms disseminate hematogenously throughout the body. Systemic miliary tuberculosis is most prominent in the liver, bone marrow, spleen, adrenal glands, meninges, kidneys, fallopian tubes, and epididymis. Both progressive primary tuberculosis and secondary tuberculosis can result in systemic seeding, causing life-threatening forms of disease such as miliary tuberculosis and tuberculous meningitis.
Reference: Robbins page 530,532