So you could take and do each number to the third power until you get approximately 124.75.
Starting with A. it would be 4x4x4 = 64 - So it can't be A.
Now, B. it would be 5x5x5 = 125 - This would be your answer since the other numbers just get bigger and stray farther and farther away from 124. Hope this helps :)
