Which of the following does not liberate $H_2$ gas upon reaction with an acid?

Consider the following reactions:
$(a) \ B_2H_6 + 6H_2O \to 2H_3BO_3 + 6H_2$
$(b) \ B_2H_6 + 6CH_3OH \to 2B(OCH_3)_3 + 6H_2$
$(c) \ B_2H_6 + 3Cl_2 \to 2BCl_3 + 6HCl$
$(d) \ B_2H_6 + 6CH_3COOH \to 2B(OCOCH_3)_3 + 6H_2$
Identify the incorrect statement about the product$(s)$.

The incorrect statement regarding '$X$' in the given reaction is $BF_3 + LiAlH_4 \xrightarrow{\text{Ether}} (X) + LiF + AlF_3$.

Which of the following statements is correct regarding boron hydrides?

$A$ compound $X$,of boron reacts with $NH_3$ on heating to give another compound $Y$,which is called inorganic benzene. The compound $X$ can be prepared by treating $BF_3$ with lithium aluminium hydride. The compounds $X$ and $Y$ are represented by the formulas.

Basicity of $H_3BO_3$ is :