In a deep well, the water surface is $78.0\,\text{m}$ below the top edge of the well. A person standing at the top lets a heavy stone fall down the well. Air resistance may be ignored. The speed of sound in air is $330\,\text{m s}^{-1}$. What is the time interval between the person releasing the stone and hearing it strike the water?
- A$3.75\,\text{s}$
- B$3.99\,\text{s}$
- C$4.19\,\text{s}$
- D$4.22\,\text{s}$