What best describes a structural similarity between RNA and DNA relevant to their function?1- they are both composed of the same type of five-carbon sugar, which allows each molecule to act as a building block for the production of polysacharides2- both structures contain nucleotide, that for base pairs with other nucleotide,which allows each molecule to act as a template in the synthesis of other nucleic acid molecules.3- both contain nitrogenous bases and phosphate groups, which allows each molecule to be used as a monomer in the synthesis of proteins and lipid4 - they are both composed of the same four nucleotide, which allows each molecule to be produced from the same pool of available nucleotides