A Horizontal 80-Cm-Diameter Hatch Is Located on the Top of a Submersible

A horizontal 80-cm-diameter hatch is located on the top of a submersible designed for a diver to escape. If the submersible is 100 m below the surface of the ocean, estimate the minimum
Force required to open the hatch? $$\text { Assume } S _ { \text {saltwater } } = 1.02 \text {. }$$

A) 300 kN
B) 400 kN
C) 500 kN
D) 600 kN