${\mathrm{H}}_3{\mathrm{BO}}_3$ ionises in water as

• A

  ${\mathrm{H}}_3{\mathrm{BO}}_3 \left(\mathrm{aq}\right) \rightleftharpoons {\mathrm{H}}^{+}\left(\mathrm{aq}\right) + {\mathrm{H}}_2{\mathrm{BO}}_3^{-} \left(\mathrm{aq}\right)$

• B

  ${\mathrm{H}}_3{\mathrm{BO}}_3 \left(\mathrm{aq}\right) \rightleftharpoons 2{\mathrm{H}}^{+}\left(\mathrm{aq}\right) + {\mathrm{HBO}}_3^{2-} \left(\mathrm{aq}\right)$

• C

  ${\mathrm{H}}_3{\mathrm{BO}}_3 \left(\mathrm{aq}\right) \rightleftharpoons 3{\mathrm{H}}^{+}\left(\mathrm{aq}\right) + {\mathrm{BO}}_3^{3-} \left(\mathrm{aq}\right)$

• D

  None of these