A pile weighing W1 kg penetrates S metres with its last blow. If W2 is the weight of the hammer having a drop of H metres, the pile can carry a maximum external load

• A. <img src="/_files/images/civil-engineering/rcc-structures-design/81-13-154-1.png">
• B. <img src="/_files/images/civil-engineering/rcc-structures-design/81-13-154-2.png">
• C. <img src="/_files/images/civil-engineering/rcc-structures-design/81-13-154-3.png">
• D. <img src="/_files/images/civil-engineering/rcc-structures-design/81-13-154-4.png">