设一组初始关键字序列为(31,65,82,76,13,27,10),则第4趟冒泡排序结束后的结果为()
(13,27,10,31,65,76,82)
(10,13,27,31,65,76,82)
(31,13,27,10,65,76,82)
(31,27,13, 65, 10,76,82)