The ratio of the section modulus of a square section of side B and that of a circular section of diameter D, is

• A. <img src="/_files/images/civil-engineering/theory-of-structures/86-21-58-1.png">
• B. <img src="/_files/images/civil-engineering/theory-of-structures/86-21-58-2.png">
• C. <img src="/_files/images/civil-engineering/theory-of-structures/86-21-58-3.png">
• D. <img src="/_files/images/civil-engineering/theory-of-structures/86-21-58-4.png">