The cross-section of a road partly in banking and partly in cutting is shown in the given figure. The area of the shaded portion is

• A. <img src="/_files/images/civil-engineering/estimating-and-costing/17-23-76-1.png">
• B. <img src="/_files/images/civil-engineering/estimating-and-costing/17-23-76-2.png">
• C. <img src="/_files/images/civil-engineering/estimating-and-costing/17-23-76-3.png">
• D. <img src="/_files/images/civil-engineering/estimating-and-costing/17-23-76-4.png">