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
All of the following abbreviations are true excepta) AMP-Adenosine monophosphateb) CMP-Cytidine monophosphatec) GMP-Guanosine monophosphated) TMP-Thymine monophosphatee) UMP-Uracil monophosphate 
Select and explain. 
A. ab, B. de, C. cd, D. bd
B: de
Answer: B: de 
Explanation: None