In the given figures shaded areas are circles. Ratio of the unshaded area in the square A to the unshaded area in the square B is
1
1 ∶ 1
2
1 ∶ 16
3
1 ∶ 2
4
16 ∶ 1
In the given figures shaded areas are circles. Ratio of the unshaded area in the square A to the unshaded area in the square B is