The molecular formula of the unsaturated fatty acid in the triglyceride is \begin{array}{ll}\text{^^20A.^^20} & \mathrm{C}_3\mathrm{H}_8\mathrm{O}_3 \\ \end{array} \begin{array}{ll}\text{^^20A.^^20} & \mathrm{C}_3\mathrm{H}_8\mathrm{O}_3 \\ \end{array} \text { C. } \quad \mathrm{C}_{16} \mathrm{H}_{30} \mathrm{O}_{2}

\text { D. } \quad \mathrm{C}_{16} \mathrm{H}_{32} \mathrm{O}_{2}