b
\(\begin{array}{*{20}{c}}
{OH\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - CH - COOH}
\end{array}\xrightarrow{{KMn{O_4}}}\begin{array}{*{20}{c}}
{O\,\,\,\,\,\,\,\,} \\
{||\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - COOH}
\end{array}\)
લેક્ટીક એસિડ પાયરૂવીક એસિડ