The diagram shows the masses of a measuring cylinder before and after some liquid has been poured into it. What is the density of the liquid?
- A$\frac{100}{120}\,\text{g cm}^{-3}$
- B$\frac{100}{140}\,\text{g cm}^{-3}$
- C$\frac{180}{120}\,\text{g cm}^{-3}$
- D$\frac{180}{140}\,\text{g cm}^{-3}$