Acetic acid was added to a solid ‘X’ kept in a test tube. A colourless, odourless gas ‘Y’ was evolved. The gas was passed through lime water which turned milky. It was concluded that _______.
(A) Solid X is NaOH, Y is CO2
(B) X is NaHCO3, Y is CO2
(C) X is CH3COONa, Y is CO2
(D) X is NaHCO3, Y is SO2