At What Depth in Sea Water Is the Gauge Pressure $\times$

Multiple Choice

At what depth in sea water is the gauge pressure equal to 1 atm? The density of sea water is 1.03 $\times$ 10³ kg/m³.

A) 5 m
B) 7.5 m
C) 10 m
D) 15 m
E) 20 m