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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