There is a frog. The frog has a small mouth. The frog has a problem. The poor frog can't eat with a small mouth. So the frog's friend has a solution. The frog's friend makes tiny sandwiches for the frog.
Answer:
All but the last one is correct
Explanation:
Ustedes (ser) is not tienen but 'son' meaning 'You all are' (both formal and informal)