Confusion with lists.

Question

Output needed for this question.

a=[5,4,3,2]
a[3]=1
a[a[3]]=6
print(a[1]%4)

Answer 1

a=[5,4,3,2]

a[3]=1 -> a=[5,4,3,1]

a[a[3]]=6 -> a[1]=6 -> a=[5,6,3,1]

print(a[1]%4) -> 6%4=2

Answer 2

Wrong answer. Output : 2

Answer 3

How?