Answer:
The correct answer is CGA, CGC, CGG, CGU, AGA and AGG
Explanation:
One of the properties of codon is that code is degenerate which means a particular amino acid can be coded by more that one triplet codon like arginine can be coded by 6 codons that are AGA, AGG, CGA, CGC, CGG, and CGU.
Therefore options contain all these codons so all the codons could still code for arginine. These different codons that code for particular amino acids are known as synonymous. Change in single-nucleotide of codon can lead to the formation of the wrong amino acid.