设随机变量X与Y相互独立且同服从<img src="https://static.zxtiku.com/wangke/imgs/topic/7d0059c6e1484ccc0493f172521266fc.jpg"/>上的均匀分布，且<img src="https://static.zxtiku.com/wangke/imgs/topic/a286c13f5469c2fc646751f8cefc20b7.jpg"/>（）. A. <img src="https://static.zxtiku.com/wangke/imgs/topic/8eade16a224bb4c8ff8d3638d4904aff.jpg"/> B. <img src="https://static.zxtiku.com/wangke/imgs/topic/6af1eb668b7b54c033346dedab30c833.jpg"/> C. <img src="https://static.zxtiku.com/wangke/imgs/topic/0a7397e8d36b3f46d91ccb5b946632e2.jpg"/> D. <img src="https://static.zxtiku.com/wangke/imgs/topic/72feae7460e39bfc6a1fe096f87e2d3b.jpg"/>