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. 3 to 4
• B. 20 to 40
• C. 5 to 15
• D. 1 to 2

Answer: (C)