MCQ
Structure of $A$ is


- A

- B

- C

- ✓








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[where $Et$ is $- C _{2} H _{5}$ ]
Compound $'A'$
$A$ $+$ $\begin{array}{*{20}{c}}
{C{H_3} - C - C{H_3}} \\
{||\,} \\
{O\,\,\,}
\end{array}$ $→$ $B$ $'B'$ is