‪‬‪‬‪‬‪‬‪‬‮‬‪‬‫‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‮‬‪‬‪‬‪‬‪‬‪‬‮‬‭‬‫‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬下面代码的输出结果是
a = [1, 2, 3]
b = a[:]
print(b)
A []
B [1, 2, 3]
C 0xF0A9
D D [3,2,1]