A force of $14\,\text{N}$ acts on the head of a nail. This produces a pressure of $25\,\text{N mm}^{-2}$ at the nail tip. What is the cross-sectional area of the nail tip?
- A$0.56\,\text{mm}^2$
- B$11\,\text{mm}^2$
- C$39\,\text{mm}^2$
- D$350\,\text{mm}^2$