The ratio of the section modulus of a square section of side B and that of a circular section of diameter D is
1) $$\frac{2\pi}{15}$$
2) $$\frac{3\pi}{16}$$
3) $$\frac{3\pi}{8}$$
4) $$\frac{\pi}{16}$$

A

[1] Only

B

[2] Only

C

[3] Only

D

[4] Only