The area Ap of cover plates in one flange of a built up beam, is given by

• A. <img src="/_files/images/civil-engineering/steel-structure-design/104-14-144-1.png">
• B. <img src="/_files/images/civil-engineering/steel-structure-design/104-14-144-2.png">
• C. <img src="/_files/images/civil-engineering/steel-structure-design/104-14-144-3.png">
• D. <img src="/_files/images/civil-engineering/steel-structure-design/104-14-144-4.png">
• E. none of these.