Estimate the quantity of 2.5 cm thick Damp-Proof Course required for construction of a room of 4 m × 3 m internal dimensions. Thickness of the wall should be 250 mm. Two windows 2 m width and 1.5 m height and one door 1.5 m width and 2.2 m height are to be provided to the room. The height of room should be 4 m.

• A. 8 × 107 mm3
• B. 14 m with width 250 mm and thickness 2.5 cm
• C. 3.375 m2 with thickness 2.5 cm
• D. 7.8125 × 104 cm3