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
According to Ann Arbor staging Hodgkins lymphoma, stage III includes? 
Select and explain. 
A. Involvement of the nodes of same side, B. Liver infiltration, C. Involvement of Lymph node region on lymphoid structure on both sides of the diaphragm, D. Disseminated involvement of the extralymphatic sites including the bone marrow and bronchial infiltration.
C: Involvement of Lymph node region on lymphoid structure on both sides of the diaphragm
Answer: C: Involvement of Lymph node region on lymphoid structure on both sides of the diaphragm 
Explanation: None