Q. What is the output of the following program?
L1 = [1, 2, 3, 4]
L2 = L1
L3 = L1.copy()
L4 = list(L1)
L1[0] = [5]
print(L1, L2, L3, L4)
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(A)
[5, 2, 3, 4] [5, 2, 3, 4] [1, 2, 3, 4] [1, 2, 3, 4]
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(B)
[[5], 2, 3, 4] [[5], 2, 3, 4] [[5], 2, 3, 4] [1, 2, 3, 4]
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(C)
[5, 2, 3, 4] [5, 2, 3, 4] [5, 2, 3, 4] [1, 2, 3, 4]
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(D)
[[5], 2, 3, 4] [[5], 2, 3, 4] [1, 2, 3, 4] [1, 2, 3, 4]
✅ Correct Answer: (D)
[[5], 2, 3, 4] [[5], 2, 3, 4] [1, 2, 3, 4] [1, 2, 3, 4]