A compound X, of boron, reacts with NH3 on heating to give another compound
Y which is called inorganic benzene. The compound X can be prepared by
treating BF3 with Lithium aluminium hydride. The compounds X and Y are
represented by the formulas.
(i) B2H6, B3N3H6
(ii) B2O3, B3 N3 H6
(iii) BF3, B3N3 H6
(iv) B3N3H6, B2H6
Option (i) B2H6, B3N3H6 is the answer.