填充用焦渣混凝土的容重最接近以下( )数值。

• A.19kN/m<img src="https://timg.fentiku.com/97/2016/12/22/pxIsFVuIuW.png" title='pxIsFVuIuW.png' alt='pxIsFVuIuW.png'/>
• B.17kN/m<img src="https://timg.fentiku.com/97/2016/12/22/THUfrnFWqs.png" title='THUfrnFWqs.png' alt='THUfrnFWqs.png'/>
• C.20kN/m<img src="https://timg.fentiku.com/97/2016/12/22/S1qVOhcx45.png" title='S1qVOhcx45.png' alt='S1qVOhcx45.png'/>
• D.12kN/m<img src="https://timg.fentiku.com/97/2016/12/22/Sknc1u4xT9.png" title='Sknc1u4xT9.png' alt='Sknc1u4xT9.png'/>

正确答案：D