A road of uniform cross-section A and length L is deformed by , when subjected to a normal force P. The Young's Modulus E of the material, is

• A. <img src="/_files/images/civil-engineering/theory-of-structures/81-21-9-1.png">
• B. <img src="/_files/images/civil-engineering/theory-of-structures/81-21-9-2.png">
• C. <img src="/_files/images/civil-engineering/theory-of-structures/81-21-9-3.png">
• D. <img src="/_files/images/civil-engineering/theory-of-structures/81-21-9-4.png">
• E. <img src="/_files/images/civil-engineering/theory-of-structures/81-21-9-5.png">