Correct option is B
The shape factor (also known as the section modulus) for a solid circular section is calculated based on its geometry and is used to assess its strength. For a solid circular section, the shape factor S is given by:
S = I/y
where I is the second moment of area (or moment of inertia) and y is the distance from the centroid to the extreme fiber. For a solid circular section with diameter D, the shape factor is:
