Given: $CH_3COCH_3$ $\large\xrightarrow[\quad pyrolysis \quad]{700^{\large\circ}C}$ $A$ $\large\xrightarrow {CH_3COOH}$ $B$ $\large\xrightarrow {RCOOH} C$ based on these reactions. Write the structures of A and C

Question

$\begin{array}{1 1}(a)\;CH_3COCH_3\;and\;CH_3COOCOCH_3\\(b)\;CH_3COCH_3\;and\;CH_3COOCOR\\(c)\;CH_3CHOHCH_3\;and\;CH_3COOCOR\\(d)\;H_2C=C=O\;and\;RCOOCOR\end{array}$