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: Pathology
Which amino acid plays a vital role in Neutrophil extracellular traps? 
Select and explain. 
A. Arginine, B. Valine, C. Isoleucine, D. Aspartic acid
A: Arginine
Answer: A: Arginine 
Explanation: Arginine amino acid is required for breakdown of histone polynucleotidyl complexes necessary for neutrophilic extra cellular trap.