The resistance $R$ of a wire rises in direct proportion to temperature. The table gives the values of $R$ at the fixed points: when the temperature is $0^\circ$C, $R = 100\,\Omega$; when the temperature is $100^\circ$C, $R = 250\,\Omega$. At what temperature does $R = 160\,\Omega$?
- A$24^\circ$C
- B$40^\circ$C
- C$60^\circ$C
- D$64^\circ$C