At a Depth of About 10 Meters the Water Pressure

At a depth of about 10 meters the water pressure on you is equal to the pressure of 1 atmosphere. The total pressure on you is therefore 2 atmospheres-1 atm from the water and a second atm from the air above the water. When the glass shown below is pushed down to a depth of around 10 meters in depth, what will be the level of the water on the inside of the glass?

A) The water level will have risen to about the halfway mark.
B) The water level will not change.
C) The water level will decrease to about one-half of what is was originally.
D) The water will fill the glass.