A measuring cylinder initially holds $30\,\text{cm}^3$ of a liquid. More of the liquid is then poured in until the level reaches the $50\,\text{cm}^3$ mark. The balance reading rises by $30\,\text{g}$. What is the density of the liquid?
- A$0.60\,\text{g cm}^{-3}$
- B$0.67\,\text{g cm}^{-3}$
- C$1.5\,\text{g cm}^{-3}$
- D$1.7\,\text{g cm}^{-3}$