Represents _______

$\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}+\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \rightarrow \mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}+\mathrm{H}_{2} \mathrm{O}$ represents _______.

A) a decomposition reaction
B) the formation of a polysaccharide
C) a denaturation reaction
D) a dehydration synthesis
E) the formation of a peptide bond