After many uses, your teakettle may develop some deposits on the inside of the kettle. These deposits are a result of:
solutes dissolving in a solution
solutes becoming un-dissolved from a solution
solvents dissolving in a solution
solutions forming from solutes and solvents
I think it's B., am I correct?
EDIT:
Never Mind, I don't need help anymore. I was right, it was B. I'm happy I got it right on my own, but still disappointed that no one tried to help me... :(