MCQ
Product $(A)$ of the reaction is


- A$\begin{matrix}
\,\,\,\,\,\,\,\,\,\,\,\,\,\,O \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,|| \\
Ph-NH-C-Ph \\
\end{matrix}$ - ✓$\begin{matrix}
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{{O}^{18}} \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,|| \\
Ph-NH-C-Ph \\
\end{matrix}$ - C$\begin{matrix}
\,\,\,\,\,\,\,\,\,OH \\
\,\,\,\,\,| \\
{{(Ph)}_{2}}-C-N{{H}_{2}} \\
\end{matrix}$ - D$Ph-CH_2 -NH - Ph$
