Which of the following belongs to the homologous series of C_(5)H_(8)O

1.	Which of the following belongs to the homologous series of C_(5)H_(8)O_(2)N?
Answer» `C_(6)H_(10)O_(3)N` `C_(6)H_(8)O_(2)N_(2)` `C_(6)H_(10)O_(2)N_(2)` `C_(6)H_(10)O_(2)N` Answer :D

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