This problem involves 3 figures, each with its own weight. To solve the problem, you need to express the weight of the 3 figures in terms of 1 of the figures. In this case: 4a = 2b => a = 1/2 b and 4c = 1b => c = 1/4 b. Now you can express the other scale in terms of b and check which answer option has the same relation