This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
Which of the following is not compatible with ageing? 
Select and explain. 
A. Decrease cross linkage, B. Decrease superoxide dismutase, C. Increase accumulation free radicals, D. Accumulated mutations in somatic cell
A: Decrease cross linkage
Answer: A: Decrease cross linkage 
Explanation: .