A tube that is vertical and sealed at one end is placed in water. Air is trapped in the tube as a column. The density of water is $1000\,\text{kg m}^{-3}$. What is the difference between the pressure of the air in the tube and the atmospheric pressure?
- A$1960\,\text{Pa}$
- B$2940\,\text{Pa}$
- C$4910\,\text{Pa}$
- D$7850\,\text{Pa}$