The correct order of increasing basicity of the given conjugate bases

1.	The correct order of increasing basicity of the given conjugate bases (R=CH_3) is
Answer» `RCOO^(-) LT HC -=C^(-) lt NH_2^(-)lt R^(-)` `RCOO^(-) lt HC -=C^(-) lt R^(-) lt NH_2^-` `R^(-) lt HC-=C^(-) lt RCOO^(-) lt NH_2^(-)` `RCOO^(-) lt NH_2^(-) lt HC -=C^(-) lt R^(-)` ANSWER :A

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