The empirical formula of a compound is $C_2H_5O$ and its molecular weight is $90$. The molecular formula of the compound is:

  • A
    $C_2H_5O$
  • B
    $C_3H_6O_3$
  • C
    $C_4H_{10}O_2$
  • D
    $C_5H_{14}O$

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