A diagram presents a rectangular block whose dimensions are $5.0\,\text{cm}$, $4.0\,\text{cm}$ and $3.0\,\text{cm}$. Its density is $2.5\,\text{g cm}^{-3}$. Calculate the mass of the block.
- A$18\,\text{g}$
- B$24\,\text{g}$
- C$50\,\text{g}$
- D$150\,\text{g}$