预应力钢筋固定端锚具的图例，下列何种表达方式是正确的？【2004-160】

• A.<img src="https://timg.fentiku.com/101/2016/10/21/F2GrZi2GHq.png" title='F2GrZi2GHq.png' alt='F2GrZi2GHq.png'/>
• B.<img src="https://timg.fentiku.com/101/2016/10/21/qhIeNHwaIQ.png" title='qhIeNHwaIQ.png' alt='qhIeNHwaIQ.png'/>
• C.<img src="https://timg.fentiku.com/101/2016/10/21/YXfInF6eVd.png" title='YXfInF6eVd.png' alt='YXfInF6eVd.png'/>
• D.<img src="https://timg.fentiku.com/101/2016/10/21/UrT8cPn4oD.png" title='UrT8cPn4oD.png' alt='UrT8cPn4oD.png'/>

正确答案：D