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

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1.	What is the output of the following code? >>> a={1,2,3} >>> b=a.add(4) >>> b
A.	None
B.	{1,2,3,4}
C.	{1,2,3}
D.	Nothing is printed
Answer» E.

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