Karen has 2 1/8 gallons of apple juice and 4 1/4 gallons of orange juice in her refrigerator. How many gallons of juice does Karen have altogether in her refrigerator? A student solved the problem this way: 2 1/8 + 4 1/4 = 2 1/8 + 4 2/8 = 6 3/8 Karen has 6 3/8 gallons of juice. Use a similar strategy to solve this problem. Adam has 4 1/3 gallons of apple juice, 3 5/9 gallons of orange juice, and 3 1/2 liters of soda in his refrigerator. How many gallons of juice does Adam have altogether in his refrigerator?
A. 7 2/3 gallons
B. 7 5/6 gallons
C. 7 2/9 gallons
D. 7 8/9 gallons