单选题

运行下列程序, 输出结果正确的是? ( )

def demo(lst, k):

      if k > len(lst):

             return lst[k:]+lst[:k]

lst=[1,2,3,4,5,6]

print(demo(lst,4))

A

[4,5,6,1,2,3]

B

[5,6,1,2,3,4]

C

[6,5,4,3,2,1]

D

[1,2,3,4,5,6]

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