执行下列Python代码，输出结果是（ ）？
a = (1,9,3,6,3,8)
a = sorted(a,reverse=True)
print(a)
(1, 3, 3, 6, 8, 9)
(9, 8, 6, 3, 3, 1)
[9, 8, 6, 3, 3, 1]
[1, 3, 3, 6, 8, 9]