A circular shaft is subjected to a twisting moment T and bending moment M. The ratio of maximum bending stress to maximum shear stress is given by

• A. <img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/55-346-1.png">
• B. <img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/55-346-2.png">
• C. <img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/55-346-3.png">
• D. <img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/55-346-4.png">