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. 1. Which of the following are correct representations...

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.
1. Which of the following are correct representations of this assertion?
1.  (R∧E)⟺C
2.  R⇒(E⟺C)
3.  R⇒((C⇒E)∨¬E)
2. Which of the sentences in (a) can be expressed in Horn form?