What is the maximum bending moment at mid-span of the beam given below ?

• A. <img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/57-1540-1.png">
• B. <img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/57-1540-2.png">
• C. <img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/57-1540-3.png">
• D. <img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/57-1540-4.png">