MCQ
Among the following structures, select $E$ isomers (arrows indicate the bonds to be considered) ?


- A$1$ and $2$
- B$1$ and $3$
- ✓$1$ and $4$
- D$2$ and $3$


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$A$ in the above reaction is:
$\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\
{C{H_3}C{H_2} - O - C - C{H_2} - C - OH} \\
{||\,\,\,\,\,} \\
{O\,\,\,\,\,\,}
\end{array}$
