Given below are two statements:
Assertion (A): In the representation
Fe³⁺/Fe²⁺, Ce⁴⁺/Ce³⁺ , and Cu²⁺/Cu, each pair represents a redox couple.
Reason (R): A redox couple is the combination of the oxidised and reduced forms of a substance involved in an oxidation or reduction half-cell.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True, but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.