Of the following statements which are true for `S_(N)1` reaction.
(a) Tertiary alkyl halides react faster than secondary.
(b) The absolute confuguration of the product is oppsoite to that of the reactant when an optical active substrate is used.
(c) The reactio shows first order kinetics.
(d) The rate of reaction depends markely on the nucleophilicity of the nucleophile.
(e) The mechanism is two step.
(f) Carbocations are intermediate.
(g) Rate `= K`[Alkyl][halide]
(h) The rate of teh reaction depends on the nature of the leaving group.
