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
RFLP, True are: 
Select and explain. 
A. Endonuclease cuts DNA at nucleotide level:, B. It acts at specific site, C. Only cohesive ends are produced, D. Only blunt ends are produced.
B: It acts at specific site
Answer: B: It acts at specific site 
Explanation: B i.e. It acts at specific site