Among the following, the state function(s) is(are)

In the reaction

$$\mathrm{2X+B_2H_6\to[BH_2(X)_2]^+[BH_4]^-}$$

the amine(s) X is(are) :

The nitrogen oxide(s) that contain(s) N-N bond(s) is(are)

The correct statement(s) about the following sugar X and Y is(are)