Which of the following pair of salts produce odourless gas with dil `H_(2)SO_(4)`?

Options

A. `HCO_(3)^(-) and HSO_(3)^(-)`
B. `HCO_(3)^(-) and CO_(3)^(2-)`
C. `S_(2)O_(3)^(2-) and CH_(3)CO_(2)^(-)`
D. `CO_(3)^(2-) and CH_(3)CO_(2)^(-)`

Answer

B