If W is total load per unit area on a panel, D is the diameter of the column head, L is the span in two directions, then the sum of the maximum positive bending moment and average of the negative bending moment for the design of the span of a square flat slab, should not be less than

• A. <img src="/_files/images/civil-engineering/rcc-structures-design/77-13-103-1.png">
• B. <img src="/_files/images/civil-engineering/rcc-structures-design/77-13-103-2.png">
• C. <img src="/_files/images/civil-engineering/rcc-structures-design/77-13-103-3.png">
• D. <img src="/_files/images/civil-engineering/rcc-structures-design/77-13-103-4.png">