What is the reducing agent in the following reaction?
2Br⁻(aq) + H₂O₂(aq) + 2H⁺(aq) → Br₂(aq) + 2H₂O(l)
a) Na⁺(aq)
b) Br₂(aq)
c) H₂O₂(aq)
d) H⁺(aq)
e) Br⁻(aq)