Conjugate base for Bronsted acids $$H_2O$$ and $$HF$$ are :

A

$$H_3O^+  and  F^-,$$ respectively

B

$$OH^-  and  F^-,$$ respectively

C

$$H_3O^+  and  H_2F^+,$$ respectively

D

$$OH^-  and  H_2F^+,$$ respectively