在结构平面图中，柱间支撑的标注，下列哪一种形式是正确的？【2005-159】

• A.<img src="https://timg.fentiku.com/101/2016/10/21/sLMxpa9Mar.png" title='sLMxpa9Mar.png' alt='sLMxpa9Mar.png'/>
• B.<img src="https://timg.fentiku.com/101/2016/10/21/jUCF3JQzI5.png" title='jUCF3JQzI5.png' alt='jUCF3JQzI5.png'/>
• C.<img src="https://timg.fentiku.com/101/2016/10/21/QWWBmb3wER.png" title='QWWBmb3wER.png' alt='QWWBmb3wER.png'/>
• D.<img src="https://timg.fentiku.com/101/2016/10/21/VXZNZqZOEs.png" title='VXZNZqZOEs.png' alt='VXZNZqZOEs.png'/>

正确答案：C