What is the output of the following piece of code? >>> a={1,2,3} > – McqOptions

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1.	What is the output of the following piece of code? >>> a={1,2,3} >>> b=a.copy() >>> b.add(4) >>> a
A.	{1,2,3}
B.	Error, invalid syntax for add
C.	{1,2,3,4}
D.	Error, copying of sets isn’t allowed
Answer» B. Error, invalid syntax for add

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