对于工字形截面，验算受弯构件、大偏心受拉构件一侧受拉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/97/2016/12/22/8NyZcROEr2.png" title='8NyZcROEr2.png' alt='8NyZcROEr2.png'/>-b)h＇<img src="https://timg.fentiku.com/97/2016/12/22/8NyZcROEr2.png" title='8NyZcROEr2.png' alt='8NyZcROEr2.png'/>+(b<img src="https://timg.fentiku.com/97/2016/12/22/8NyZcROEr2.png" title='8NyZcROEr2.png' alt='8NyZcROEr2.png'/>-b)h<img src="https://timg.fentiku.com/97/2016/12/22/8NyZcROEr2.png" title='8NyZcROEr2.png' alt='8NyZcROEr2.png'/>
• B.b×h<img src="https://timg.fentiku.com/97/2016/12/22/7M5IyD7eIV.png" title='7M5IyD7eIV.png' alt='7M5IyD7eIV.png'/>+(h＇<img src="https://timg.fentiku.com/97/2016/12/22/p27PKVC8CG.png" title='p27PKVC8CG.png' alt='p27PKVC8CG.png'/>f-b)h＇<img src="https://timg.fentiku.com/97/2016/12/22/p27PKVC8CG.png" title='p27PKVC8CG.png' alt='p27PKVC8CG.png'/>+(b<img src="https://timg.fentiku.com/97/2016/12/22/p27PKVC8CG.png" title='p27PKVC8CG.png' alt='p27PKVC8CG.png'/>-b)h<img src="https://timg.fentiku.com/97/2016/12/22/p27PKVC8CG.png" title='p27PKVC8CG.png' alt='p27PKVC8CG.png'/>
• C.b×h+(b<img src="https://timg.fentiku.com/97/2016/12/22/4tHyJcUjTC.png" title='4tHyJcUjTC.png' alt='4tHyJcUjTC.png'/>-b)h<img src="https://timg.fentiku.com/97/2016/12/22/4tHyJcUjTC.png" title='4tHyJcUjTC.png' alt='4tHyJcUjTC.png'/>
• D.b×h<img src="https://timg.fentiku.com/97/2016/12/22/ZugKRv9rlK.png" title='ZugKRv9rlK.png' alt='ZugKRv9rlK.png'/>+(b<img src="https://timg.fentiku.com/97/2016/12/22/T6mlGv63eG.png" title='T6mlGv63eG.png' alt='T6mlGv63eG.png'/>-b)h<img src="https://timg.fentiku.com/97/2016/12/22/T6mlGv63eG.png" title='T6mlGv63eG.png' alt='T6mlGv63eG.png'/>

正确答案：C