What will be the output produced by the following code? Stationery = [pencils, notebooks, scales

Q. What will be the output produced by the following code?

Stationery = ['pencils', 'notebooks', 'scales', 'erasers']
S = pd.Series ([20, 33, 52, 10], index = Stationery)
S2 = pd.Series ([17, 13, 31, 32], index = Stationery)
print (S = S2)
S = S + S2
print (S + S2)

Answer :-

It will produce error.
Error in 4th line.