PLS HURRY
Look at the image below

20

Explanation:

During the first iteration for the list [1, 4], numB = 1.

During the first iteration of the list [2, 3], numA = 2.

answer = answer + numA + numB

= 0 + 2 + 1

= 3

Since the list [2, 3] is in a nested loop, we need to first finish iterating the whole list before numB iterates to the next number, so numA = 3 this time and numB still stays at 1.

answer = answer + numA + numB

= 3 + 3 + 1

= 7

Now, numB moves to 4 and numA starts back at 2 again.

answer = answer + numA + numB

= 7 + 2 + 4

= 13

numB still says at 4 and numA moves to 3 since it is in a nested loop:

answer = answer + numA + numB

= 13 + 3 + 4

= 20

print(answer) will print the output 20.

Hope this helps :)