The values or the answer is C and F!
The property is commutative property also known as flip flop property to some people
The answer is either c of d but if I had to pick one I would say C.
The answer for your question is Ice queen clones.
Your answer would be 12/25 tons. If you set up a proportion 2/5 X
-------- = -------
5/6 1
Solve your proportion.