Match the cells in List-I with the facts in List-II. List-I: (A) mercury cell; (B) dry cell; (C) lead storage battery; (D) hydrogen-oxygen fuel cell. List-II: (1) the reactants are fed in from outside; (2) a zinc can and ammonium chloride paste; (3) a lead dioxide plate in sulphuric acid; (4) a steady voltage, because the electrolyte is not used up.