According to some political pundits, a person who is radical (r) is electable (e) if he/she is conservative (c), but otherwise is not electable. a. which of the following are correct representations of this assertion? (i) (r ∧ e) ⇐⇒ c incorrect, this says all c are electable and radical (ii) r ⇒ (e ⇐⇒ c) correct, if radical, electable if and only if conservative (iii) r ⇒ ((c ⇒ e) ∨¬e) vacuous, true ⇒ true b. which of the sentences in (a) can be expressed in horn form?