If A is the area of the foundation of a retaining wall carrying a load W and retaining earth of weight w per unit volume, the minimum depth (h) of the foundation from the free surface of the earth, is

If A is the area of the foundation of a retaining wall carrying a load

1.	If A is the area of the foundation of a retaining wall carrying a load W and retaining earth of weight w per unit volume, the minimum depth (h) of the foundation from the free surface of the earth, is
A.	<img src="/_files/images/civil-engineering/rcc-structures-design/83-13-171-1.png">
B.	<img src="/_files/images/civil-engineering/rcc-structures-design/83-13-171-2.png">
C.	<img src="/_files/images/civil-engineering/rcc-structures-design/83-13-171-3.png">
D.	<img src="/_files/images/civil-engineering/rcc-structures-design/83-13-171-4.png">
Answer» D. <img src="/_files/images/civil-engineering/rcc-structures-design/83-13-171-4.png">