A Dictator Has Built a Bunker for His Use in Emergencies

Multiple Choice

A dictator has built a bunker for his use in emergencies. Its dimensions are shown below. When it floods to ground level during a tropical storm, the gauge pressure at point A, in Pa, is:

A) 3.92 * 105.
B) 4.90 * 105.
C) 5.39 * 105.
D) 5.88 * 105.
E) 6.89* 105.