A metal disc is warmed to $600^\circ\text{C}$ and then placed into a beaker of water. What effect does this have on the mass of the metal disc and on the mass of the water in the beaker?
- Amass of metal disc increases; mass of water decreases
- Bmass of metal disc increases; mass of water no change
- Cmass of metal disc no change; mass of water decreases
- Dmass of metal disc no change; mass of water increases