If E is the spherical excess and R the radius of the earth, the surface area of the triangle, is

• A. <img src="/_files/images/civil-engineering/advanced-surveying/82-4.7-1.png">
• B. <img src="/_files/images/civil-engineering/advanced-surveying/82-4.7-2.png">
• C. <img src="/_files/images/civil-engineering/advanced-surveying/82-4.7-3.png">
• D. <img src="/_files/images/civil-engineering/advanced-surveying/82-4.7-4.png">