An anticodon refers to the the three bases on a tRNA that match up with mRNA; option A.
An anticodon is a complementary triplet of nucleotides which is found in tRNA molecules.
The anticodons are complementary to codons which are the triplets of nucleotides found in mRNA which code for a particular amino acid.
In conclusion, anticodons are complementary to codons.
Learn more about anticodons at: https://brainly.com/question/26494180
#SPJ1