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
In giant cell arteritis : 
Select and explain. 
A. Histological diagnosis is based on fragmentation of the internal intimal, B. C-reactive protein is always raised, C. Giant cell is needed for diagnosis, D. Anaemia is a feature
C: Giant cell is needed for diagnosis
Answer: C: Giant cell is needed for diagnosis 
Explanation: None