A certain thickness of the coal, if stored unscientifically on soft (katcha) ground having no metallic/concrete flooring gets sunked into the ground, which is termed as the ‘carpet loss’. The carpet loss may be of the order of ______________ cms?
(A) 1 to 2
(B) 3 to 4
(C) 5 to 15
(D) 20 to 40

