Answer:
A, C
Explanation:
A. 6:8 = 12:16 this is because you multiply 6 by 2 and get 12 and multiply 8 by 2 and get 16.
B. No equation because 6/6 = 1 but, 8/6 = 1.3 repeating.
C. 6:8 = 18:24 this is so because you multiply 6 by 3 and get 18 and multiply 8 by 3 and get 24.