Which sentence uses commas correctly?
AAt each stop, in the treasure hunt we found an envelope with a clue.
BAt each stop in the treasure hunt, we found an envelope with a clue.
CAt each stop, in the treasure hunt, we found an envelope with a clue.
DAt each stop in the treasure hunt we found an envelope with a clue.
AAt each stop, in the treasure hunt we found an envelope with a clue.
BAt each stop in the treasure hunt, we found an envelope with a clue.
CAt each stop, in the treasure hunt, we found an envelope with a clue.
DAt each stop in the treasure hunt we found an envelope with a clue.