If W is the uniformly distributed load on a circular slab of radius R fixed at its ends, the maximum positive radial moment at its centre, is

• A. <img src="/_files/images/civil-engineering/rcc-structures-design/77-13-106-3.png">
• B. <img src="/_files/images/civil-engineering/rcc-structures-design/77-13-106-2.png">
• C. <img src="/_files/images/civil-engineering/rcc-structures-design/77-13-106-1.png">
• D. zero
• E. none of these.