What will be the output of the following Python code snippet...

What will be the output of the following Python code snippet?

def example(a):
    a = a + '2'
     a = a*2
    return a
>>>example("hello")

Course Name: Python

1]
indentation Error
2]
cannot perform mathematical operation on strings
3]
hello2
4]
hello2hello2

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i) Parentheses
ii) Exponential
iii) Multiplication
iv) Division
v) Addition
vi) Subtraction

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i) Parentheses ii) Exponential iii) Multiplication iv) Division v) Addition vi) Subtraction

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i) Parentheses
ii) Exponential
iii) Multiplication
iv) Division
v) Addition
vi) Subtraction