图1-2-6所示结构，杆件ED的弯矩M_ED（以ED左侧受拉为正，右侧受拉为负）最接近下列何值？（）。

• A.<img src="https://timg.fentiku.com/javaimportItems/48556df29f8041a698a34d5118931a4f/images/32181.png" /><br/>
• B.<img src="https://timg.fentiku.com/javaimportItems/48556df29f8041a698a34d5118931a4f/images/3280d.png" /><br/>
• C.<img src="https://timg.fentiku.com/javaimportItems/48556df29f8041a698a34d5118931a4f/images/32ef6.png" /><br/>
• D.<img src="https://timg.fentiku.com/javaimportItems/48556df29f8041a698a34d5118931a4f/images/33530.png" /><br/>

正确答案：B