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: Biochemistry
Which is not found in DNA: 
Select and explain. 
A. Adenine, B. Thymine, C. Guanine, D. Uracil
D: Uracil
Answer: D: Uracil 
Explanation: D i.e. Uracil