When carbondioxide is bubbled into limewater a white precipitate is formed. If the passage of the gas is continued, the precipitate disappears. The reason for this is

• A.calcium carbonate is formed which on reaction dissolves
• B.calcium hydrogen carbonate is precipitated and then dissolves
• C.calcium carbonate is formed which on reaction with further carbondioxide forms solube calcium hydrogen carbonate
• D.concentration of the solution has occurred with the deposition of calcium hydroxide
• E.the solution has become saturated and solid carbondioxide has been deposited