Hannah uses 2 cups of batter to make 6 pancakes. Which combination of batter and pancakes has the same relationship as Hannah's?
1) 4 cups of batter to make 12 pancakes
2) 3 cups of batter to make 9 pancakes
3) 5 cups of batter to make 15 pancakes
4) 1 cup of batter to make 3 pancakes