The greatest pressure granite rock can tolerate is $2.0 \times 10^{8}\,\text{N m}^{-2}$. If the pressure rises above this value, the rock starts to behave like a liquid. Granite has a density of $2.7 \times 10^{3}\,\text{kg m}^{-3}$. How tall would a mountain made only of granite be if its base were just on the point of flowing?
- A$3.8 \times 10^{3}\,\text{m}$
- B$7.6 \times 10^{3}\,\text{m}$
- C$3.7 \times 10^{4}\,\text{m}$
- D$7.4 \times 10^{4}\,\text{m}$