Show the net ionic curly-arrow Bronsted-Lowry acid-base reaction of a borohydride anion, BH4⁻, with the hydrogen-bonded vanillin phenoxide.
a) BH4⁻ + H⁺ → H₂B + OH⁻
b) BH4⁻ + H⁺ → B2H6 + OH⁻
c) BH4⁻ + H⁺ → B2H₅⁻ + H₂O
d) BH4⁻ + H⁺ → B2H4 + H₂O