Which pair of ratios form a proportion?

A.
2 : 3 and 3 : 4

B.
8 : 12 and 16 : 20

C.
4 : 7 and 12 : 21

D.
9 : 15 and 10 : 16
will medal!! need answer only, no explanation!! NEED ASAP

Question

Which pair of ratios form a proportion?  
 
 

 
 

  

  A. 
  2 : 3 and 3 : 4   
   

 
 

  

  B. 
  8 : 12 and 16 : 20   
   

 
 

  

  C. 
  4 : 7 and 12 : 21   
   

 
 

  

  D. 
  9 : 15 and 10 : 16  
will medal!! need answer only, no explanation!! NEED ASAP

anonymous · Answer

What do u think it is

anonymous · Answer

Im not just gonna give u the straight up answer

anonymous · Answer

Ive been doing math on k12 for an hour, I don't get this. @lizzyrockefeller

anonymous · Answer

@sleepyjess help?

anonymous · Answer

@wolfgrey23 help?

anonymous · Answer

okay so that doesnt mean were allowed to give u straght up answers though

anonymous · Answer

|dw:1420834563569:dw| @lizzyrockefeller

anonymous · Answer

@darkb0nebeauty help?

anonymous · Answer

What grade are you in and what school you go to?

anonymous · Answer

6th. I go to k12. Not saying the school im connected through.

anonymous · Answer

@darkb0nebeauty

anonymous · Answer

oh im in the 11th! And i would say C or B but im leaning toward C, i am not 100% sure because i haven't done this in a while

anonymous · Answer

okay! @darkb0nebeauty