A Chemist Places CaCO₃ in One Flask and KBr in Another

A chemist places CaCO₃ in one flask and KBr in another. Water is added to both flasks and the mixture in the first flask is added to the second. Which choice below describes correctly the results of this experiment?

A) Both of the compounds in the flasks dissolve when water is added and CaBr₂ precipitates when the contents of the flasks are mixed.
B) Both of the compounds in the flasks dissolve when water is added and K₂CO₃ precipitates when the contents of the flasks are mixed.
C) Both of the compounds in the flasks dissolve when water is added and there is no precipitate when the contents of the flasks are mixed.
D) The CaCO₃ does not dissolve in water, but the KBr does dissolve. There is no change upon mixing the contents of the two flasks.
E) none of these