In the reaction $\underset{\text{(Vapour)}}{C_2H_5OH} \xrightarrow[300^{\circ}C]{Cu} X$. The molecular formula of $X$ is

  • A
    $C_4H_6O$
  • B
    $C_4H_{10}O$
  • C
    $C_2H_4O$
  • D
    $C_2H_6$

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