If E is the modulus of elasticity of the concrete in kg/cm2, d is the slab thickness in cm, is the Poisson's ratio for the concrete, k is the sub-grade modulus kg/cm3, the radius r of relative stiffness in cm,

If E is the modulus of elasticity of the concrete in kg/cm2, d is the

1.	If E is the modulus of elasticity of the concrete in kg/cm2, d is the slab thickness in cm, is the Poisson's ratio for the concrete, k is the sub-grade modulus kg/cm3, the radius r of relative stiffness in cm,
A.	<img src="/_files/images/civil-engineering/highway-engineering/38-16-185-1.png">
B.	<img src="/_files/images/civil-engineering/highway-engineering/38-16-185-2.png">
C.	<img src="/_files/images/civil-engineering/highway-engineering/38-16-185-3.png">
D.	<img src="/_files/images/civil-engineering/highway-engineering/38-16-185-4.png">
Answer» B. <img src="/_files/images/civil-engineering/highway-engineering/38-16-185-2.png">