以下关于图1-5-50所示两结构A、B点的水平位移，正确的是（）。

• A.<img src="https://timg.fentiku.com/javaimportItems/a823179c7ac14593a5f89950a90b6790/images/22e0e8.png" />=1.5<img src="https://timg.fentiku.com/javaimportItems/a823179c7ac14593a5f89950a90b6790/images/22e524.png" /><br/>
• B.<img src="https://timg.fentiku.com/javaimportItems/a823179c7ac14593a5f89950a90b6790/images/22e970.png" />=<img src="https://timg.fentiku.com/javaimportItems/a823179c7ac14593a5f89950a90b6790/images/22edac.png" /><br/>
• C.<img src="https://timg.fentiku.com/javaimportItems/a823179c7ac14593a5f89950a90b6790/images/22f1f8.png" />=0.75<img src="https://timg.fentiku.com/javaimportItems/a823179c7ac14593a5f89950a90b6790/images/22f634.png" /><br/>
• D.<img src="https://timg.fentiku.com/javaimportItems/a823179c7ac14593a5f89950a90b6790/images/22fa80.png" />=0.5<img src="https://timg.fentiku.com/javaimportItems/a823179c7ac14593a5f89950a90b6790/images/22febc.png" /><br/>

正确答案：A