A block of base $10 \mathrm{~cm} \times 10 \mathrm{~cm}$ and height 15 cm is kept on an inclined plane. The coefficient of friction between them is $\sqrt{3}$. The inclination $\theta$ of this inclined plane from the horizontal plane is gradually increased from $0^{\circ}$. Then
Select the correct option:
A
at $\theta=30^{\circ}$, the block will start sliding down the plane
B
the block will remain at rest on the plane up to certain $\theta$ and then it will topple
C
at $\theta=60^{\circ}$, the block will start sliding down the plane and continue to do so at higher angles
D
at $\theta=60^{\circ}$, the block will start sliding down the plane and on further increasing $\theta$, it will topple at certain $\theta$
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