Kate made an apple pie with 2 1/2 cups of red apples, 2/3 cup of green apples, and 1/6 cup of yellow apples. How many cups of apples did Kate use to make the pie?
1. 1 1/3 cups
2. 2 4/11 cups
3. 2 2/3 cups
4. 3 1/3 cups