Can someone help me!

Answer:
B
Step-by-step explanation:
Not A cause the ratios are different, as the first ratio is -1/3 and the rest are 1/3
B is correct cause the ratio is 1/3 and the first term is 1
Not C cause the ratio is not 1/3
Not D cause the ratio is 3
Have a nice day! :)
-Vana