The answer is D
Explanation:
If we use A as a reference sides:3&2
To get from A to B you half both sides to get :1.5&1
To get from A to C you multiply each side by 1.5 to get : 4.5 & 3
But to get from A to D the side that was 3 is multiplying by 1 while the side that was 2 is multiplying by 1.5