If Z and I are the section modulus and moment of inertia of the section, the shear force F and bending moment M at a section are related by

• A. <img src="/_files/images/civil-engineering/strength-of-materials/125-6.41-1.png">
• B. <img src="/_files/images/civil-engineering/strength-of-materials/125-6.41-2.png">
• C. <img src="/_files/images/civil-engineering/strength-of-materials/125-6.41-3.png">
• D. <img src="/_files/images/civil-engineering/strength-of-materials/125-6.41-4.png">