Which of the following could be the areas of three squares?
A. 12 ft 2 , 16 ft 2 and 20 ft 2
B. 10 ft 2 , 18 ft 2 and 30 ft 2
C. 4 ft 2 , 5 ft 2 and 12 ft 2
D. 8 ft 2 , 16 ft 2 and 24 ft