Refer to Exhibit 13-1 below.Exhibit 13-1 A dictator has built a bunker for his use in emergencies. Its dimensions are shown below. When it floods to ground level during a

Refer to Exhibit 13-1 below.Exhibit 13-1 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, air is trapped above the dashed line in the bunker. 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.