The ratio of specific gravities of A to B is

Question

In a differential manometer a head of 0.6 m of fluid A in limb 1 is found to balance a head of 0.3 m of fluid B in limb 2. The ratio of specific gravities of A to B is                                  

(A) 2 (B) 0.5 (C) 0.3 (D) 0.18