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【单选题】
以下程序的输出结果是: frame = [[1,2,3],[4,5,6],[7,8,9]] rgb = frame[::-1] print(rgb)A.
[[1, 2, 3], [4, 5, 6]]
B.
[[7, 8, 9]]
C.
[[1,2,3],[4,5,6],[7,8,9]]
D.
[[7, 8, 9], [4, 5, 6], [1, 2, 3]]
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