执行下列代码，正确的答案是？（ ）
>>> l=[10,0,1,6,12,8]
>>> l.sort(key=float)
>>> l
[10.0,0.0,1.0,6.0,12.0,8.0]
[0,1,10,12,6,8]
[0, 1, 6, 8, 10, 12]
[12,10,8,6,1,0]