Correct statement of the following

Options

A. The carbonates of alkalimetals decomposed on heating to liberate `CO_(2)`
B. The thermal stability of carbonates of IA group decreases down the group
C. `Li_(2)CO_(3)` is not so stable to heat because `Li^(+)` polarises a large `CO_(3)^(2-)` leading to the formation of `Li_(2)O` and `CO_(2)`
D. `LiHCO_(3)` is solid and other hydrogen carbonates of IA group do not exist as solids

Answer

C