When the bottle is empty, its mass is $20\,\text{g}$. The volume of the bottle is $10\,\text{cm}^3$. If it is filled with liquid, the combined mass becomes $150\,\text{g}$. Calculate the density of the liquid.
- A$0.50\,\text{g cm}^{-3}$
- B$2.0\,\text{g cm}^{-3}$
- C$13\,\text{g cm}^{-3}$
- D$15\,\text{g cm}^{-3}$