Predict the product $(T)$ for the following reaction sequence.${{C}_{6}}{{H}_{5}}-CH=O\\xrightarrow{KCN\/O{{H}^{-}}}R\\xrightarrow{Cr{{O}_{2}}\/{{H}^{+}}}S\\xrightarrow[(ii)Acidification]{(i)concKOH}T$ :A. Cinnamic acidB. Mandelic acidC. Benzilic acidD ...