Which of the following could be the lengths of the sides of a 30°-60°-90° triangle?
A. (1/2) , (square root of 3/2) , square root of 2
B. 3 square root of 2 , 3 square root of 2, 6
C. square root of 3, 3, 2 square root of 3
D. 3, 4 , 5