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
Restriction fragment length polymorphism is used for: 
Select and explain. 
A. Analysis of chromosome structures, B. DNA estimation, C. Synthesis of nucleic acid, D. Detecting proteins in a cell
A: Analysis of chromosome structures
Answer: A: Analysis of chromosome structures 
Explanation: A i.e. Analysis of Chromosal structure