The dissociation constants of two acids $HA_1$ and $HA_2$ are $3.0 \times 10^{-4}$ and $1.8 \times 10^{-5}$ respectively. The relative strengths of the acids will be

Question

(a) 1 : 4

(b) 4 : 1

(c) 1 : 16

(d) 16 : 1