What is the only common methylation in the DNA of eukaryotes?

Q. What is the only common methylation in the DNA of eukaryotes?

A.            Adenosine in GpA dinucleotides

B.            Guanosine in ApGpA trinucleotides

C.            Cytosine in CpG dinucleotides

D.            None of the above

Answer: Cytosine in CpG dinucleotides