What does this function print?

What does this function print?
def print_alpha_nums(abc_list, num_list):
for char in abc_list:
for num in num_list:
print(char, num)
return
print_alpha_nums([‘a’, ‘b’, ‘c’], [1, 2, 3])

• a 1
  a 2
  a 3
  b 1
  b 2
  b 3
  c 1
  c 2
  c 3
• [‘a’, ‘b’, ‘c’], [1, 2, 3]
• aaa
  bbb
  ccc
  111
  222
  333
• a 1 2 3
  b 1 2 3
  c 1 2 3