Answer: (1, 2, 3, 4)
In Python (1, 2) and (3, 4) are tuples. When we add two tuples you get a new tuple with
tuple1 = (1,2)
tuple2 = (3,4)
tuple3 = tuple1 + tuple2 = (1,2) + (3,4) = (1, 2, 3, 4)
Python code:
print(( 1,2 )+( 3,4 ))
# output
#(1, 2, 3, 4)