If p1 and p2 are mutually perpendicular principal stresses acting on a soil mass, the normal stress on any plane inclined at angle to the principal plane carrying the principal stress p1, is :

• A. <img src="/_files/images/civil-engineering/rcc-structures-design/82-13-162-1.png">
• B. <img src="/_files/images/civil-engineering/rcc-structures-design/82-13-162-2.png">
• C. <img src="/_files/images/civil-engineering/rcc-structures-design/82-13-162-3.png">
• D. <img src="/_files/images/civil-engineering/rcc-structures-design/82-13-162-4.png">
• E. <img src="/_files/images/civil-engineering/rcc-structures-design/82-13-162-5.png">