Which equilibrium can be described as an acid-base reaction using Lewis acid-base definition but not using Bronsted and Lowry concept?

Question

(a) $NH_3 + CH_3COOH \rightleftharpoons CH_3COO^- + NH^+_4$

(b) $H_2O + CH_3COOH \rightleftharpoons CH_3COO^- + H_3O^+$

(c) $4NH_3 + Cu^{2+} \rightleftharpoons [Cu(NH_3)_4]^{2+}$

(d) $HCl + CH_3COOH \rightleftharpoons CH_3COO^+H_2 + Cl^-$