Which of the following statements is/are correct regarding ${\mathrm{BrF}}_5$ and ${\mathrm{BrCl}}_5$ ?

The bond angle of F-Br-F in ${\mathrm{BrF}}_5$ is less than the bond angle of Cl-Br-Cl in ${\mathrm{BrCl}}_5$. 

Both the molecule has same structural geometry. Thus, they are isostructural. Hence, option B and D are correct.