The pair that is isostructural, meaning having the same shape and hybridization, is

A

$$\mathrm{NF_3}$$ and $$\mathrm{BF_3}$$

B

$$\mathrm{BF_4^-}$$ and $$\mathrm{NH_4^+}$$

C

$$\mathrm{BCl_3}$$ and $$\mathrm{BrCl_3}$$

D

$$\mathrm{NH_3}$$ and $$\mathrm{NO_3^-}$$