The area of the cross-section of a road fully in banking shown in the given figure, is

• A. <img src="/_files/images/civil-engineering/estimating-and-costing/17-23-77-1.png">
• B. <img src="/_files/images/civil-engineering/estimating-and-costing/17-23-77-2.png">
• C. <img src="/_files/images/civil-engineering/estimating-and-costing/17-23-77-4.png">
• D. None of these