对于工字形截面，验算偏心受压构件一侧纵向钢筋的最小配筋率时，混凝土面积取( )。

• A.b×h+(b＇<img src="https://timg.fentiku.com/97/2016/12/22/KEW3zUG48b.png" title='KEW3zUG48b.png' alt='KEW3zUG48b.png'/>-b)h＇<img src="https://timg.fentiku.com/97/2016/12/22/KEW3zUG48b.png" title='KEW3zUG48b.png' alt='KEW3zUG48b.png'/>+(b<img src="https://timg.fentiku.com/97/2016/12/22/KEW3zUG48b.png" title='KEW3zUG48b.png' alt='KEW3zUG48b.png'/>-b)h<img src="https://timg.fentiku.com/97/2016/12/22/KEW3zUG48b.png" title='KEW3zUG48b.png' alt='KEW3zUG48b.png'/>
• B.b×h<img src="https://timg.fentiku.com/97/2016/12/22/Jba3VHLVul.png" title='Jba3VHLVul.png' alt='Jba3VHLVul.png'/>+(h＇<img src="https://timg.fentiku.com/97/2016/12/22/oYXMz8zcN2.png" title='oYXMz8zcN2.png' alt='oYXMz8zcN2.png'/>f-b)h＇<img src="https://timg.fentiku.com/97/2016/12/22/oYXMz8zcN2.png" title='oYXMz8zcN2.png' alt='oYXMz8zcN2.png'/>+(b<img src="https://timg.fentiku.com/97/2016/12/22/oYXMz8zcN2.png" title='oYXMz8zcN2.png' alt='oYXMz8zcN2.png'/>-b)h<img src="https://timg.fentiku.com/97/2016/12/22/oYXMz8zcN2.png" title='oYXMz8zcN2.png' alt='oYXMz8zcN2.png'/>
• C.b×h
• D.b×h<img src="https://timg.fentiku.com/97/2016/12/22/SKegKFnCCr.png" title='SKegKFnCCr.png' alt='SKegKFnCCr.png'/>

正确答案：A