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
Restrinction Endonucleas function --> true about: 
Select and explain. 
A. Cut both the strands of ds DNA, B. The cut ends produced are sticky, C. The cut ends produced are blunt, D. All
D: All
Answer: D: All 
Explanation: A i.e. Cut both strands of ds DNA; B i.e. Cut ends produced are sticky; C i.e. Cut end produced are blunt