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: Pharmacology
Which of the following NSAID does not having antiinflammatory activity? 
Select and explain. 
A. Ketorolac, B. Diclofenac, C. Mefenamic acid, D. Acetaminophen
D: Acetaminophen
Answer: D: Acetaminophen 
Explanation: All NSAIDs, including selective COX-2 inhibitors, are antipyretic, analgesic, and anti-inflammatory, with the exception of acetaminophen, which is antipyretic and analgesic but is largely devoid of anti-inflammatory activity. Ref: Grosser T., Smyth E. (2011). Chapter 34. Anti-inflammatory, Antipyretic, and Analgesic Agents; Pharmacotherapy of Gout. In L.L. Brunton, B.A. Chabner, B.C. Knollmann (Eds), Goodman & Gilman's The Pharmacological Basis of Therapeutics, 12e.