A block of base 10 cm × 10 cm and height 15 cm is kept on an inclined plane. The coefficient of friction between them is 3 . The inclination θ of this inclined plane from the horizontal plane is graduallyincreased from 0°. Then___.

• A. at θ = 30°, the block will start sliding down the plane
• B. the block will remain at rest on the plane up to certain θ and then it will topple
• C. at θ = 60°, the block will start sliding down the plane and continue to do so at higher angles
• D. at θ = 60°, the block will start sliding down the plane and on further increasing θ, it will topple at certain θ