$14 \ g$ of element $X$ combines with $16 \ g$ of oxygen. Based on this,which of the following statements is incorrect?
- AElement $X$ has an atomic mass of $14$ and its oxide is $XO$.
- BElement $X$ has an atomic mass of $14$ and its oxide is $X_2O$.
- CElement $X$ has an atomic mass of $7$ and its oxide is $X_2O$.
- DElement $X$ has an atomic mass of $14$ and its oxide is $X_2O_2$.
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