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
Change in the second base of erine codon (UCA) may result in UAA. This is an example of which type of mutation? 
Select and explain. 
A. Missense, B. Silent, C. Nonsense, D. Frameshift
C: Nonsense
Answer: C: Nonsense 
Explanation: None