These two area models represent 2/3 and 6/9 . Choose the equation that shows why 2/3 and 6/9 are equivalent.
A) 2*3/3*3 =6/9
B)2+3/3+3= 5/9
C)2*2/3*3=4/9
D) (2/2) / (3/3) = 1/1