Correct Answer - b
b) mRNA is a long RNA. It gets attached to ribosome. mRNA has methylated region at the 5 terminus. It functions as a cap for attachment with ribosome. Cap is followed by an initiationi codon (AUG) either immediately or after a small noncoding region. Then there is coding region followed by termination codon (UAA, UAG or UGA). there is then a small noncoding region and poly A area at the 3 terminus, An mRNA may specify only a single polypeptide or a numberof them. the former is called monocistronic while the latter is knonw as polycistronic.