The vertical stress at depth z, directly below the point load p is (k is a constant)

• A. <img src="/_files/images/civil-engineering/gate-exam-questions/897-132-1.png">
• B. <img src="/_files/images/civil-engineering/gate-exam-questions/897-132-2.png">
• C. <img src="/_files/images/civil-engineering/gate-exam-questions/897-132-3.png">
• D. <img src="/_files/images/civil-engineering/gate-exam-questions/897-132-4.png">