Question: What is the output of the following Python code: a = [ 1 , 2 , 3 , 4 ] a [ 3 : 1

What is the output of the following Python code:
a=[1,2,3,4]
a[3:1:-1]
[]
[4,1]
[4,1,2]
[4,3]
[4,3,2]

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