An organic compound containing $C$,$H$,and $N$ gave the following analysis: $C = 40\%$,$H = 13.33\%$,and $N = 46.67\%$. Its empirical formula would be:
- A$C_2H_7N_2$
- B$CH_5N$
- C$CH_4N$
- D$C_2H_7N$
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