MCQ
Which statement is correct ?


- ABoth $x$ and $y$ are $2$ -Butene
- BBoth $x$ and $y$ are $1-$ Butene
- ✓$x$ is $1-$ Butene and $y$ is $2 -$ Butene
- D$x$ is $2 -$ Butene and $y$ is $1-$ Butene


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$(I)$ $\begin{array}{*{20}{c}}
O \\
{||} \\
{Ph\, - C - Ph}
\end{array}$
$(II)$ $\begin{array}{*{20}{c}}
{\,\,\,\,O} \\
{\,\,\,\,||} \\
{C{H_3} - C - H}
\end{array}$
$(III)$ $\begin{array}{*{20}{c}}
O \\
{||} \\
{C{H_3} - C - C{H_3}}
\end{array}$
is
$CS_2 + 3O_2 \to 2SO_2 + CO_2$
$(i)$ $n\, = 4, l\, = 1$ $(ii)$ $n\, = 4, l\, = 0$
$(iii)$ $n\, = 3, l\, = 2$ $(iv)$ $n\, = 3, l\, = 1$
The sequence representing increasing order of energy, is