Which ratios have a unit of 3 select all that apply

2 cups: 2/3 cup
2/3 cup: 1 cup
15/2 cups: 2 1/2 cup
1 cup: 1/4 cup
3 3/4 cups: 2 cups
2 1/2 cups: 5/6 cup

The ratios that have a unit of 3 are:

1) 2 cups: 2/3 cup
2) 3 3/4 cups: 2 cups