Question: What is the value of the variable string after the execution of the following code? string = 'Hello' string + = ' world' 'Helloworld' 'Hello

What is the value of the variable string after the execution of the following code?
string = 'Hello'
string +=' world'
'Helloworld'
'Hello world'
'Hello'
world'
What is the value of the variable string after the execution

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