$\begin{array}{1 1} \text{(a) (a) DNA (b) More than one codon can code for the same amino acids. (c) First three bases.}\\ \text{(b) (a) Ribosomes (b) More than one codon can code for the same amino acids. (c) First two bases.} \\ \text{(c) (a) RNA (b) More than one codon can code for the same amino acids. (c) First two bases.} \\\text{(d)(a) Ribosomes (b) More than one codon can code for the same amino acids. (c) First Four bases.}\end{array} $