Choose the incorrect statement/reaction.

• A
  $BCl_{3} + NH_{3(g)} \to BCl_{2}(NH_{2}) + HCl$
• B
  $AlCl_{3}$ in aqueous solutions forms octahedral $[Al(H_{2}O)_{6}]^{3+}$ ions.
• C
  The conjugate base in aqueous solution of $H_{3}BO_{3}$ is $[B(OH)_{4}]^{-}$.
• D
  Aqueous solution of borax,$Na_{2}B_{4}O_{7} \cdot 10H_{2}O$,which is a buffer system,forms a basic solution.