This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immune system, Subject name: Medicine
Which of the following joints findings Is most suggestive of an inflammatory, rather than an osteroahritis cause of joints pain? 
Select and explain. 
A. Painful range of motion, B. Crepitus, C. Bony aicular enlargement, D. Swelling and warmth
D: Swelling and warmth
Answer: D: Swelling and warmth 
Explanation: The five classical signs of inflammation are heat, pain, redness, swelling, and loss of function (Latin calor, dolor, rubor, tumor, and functio laesa). Ref - Internet