Given: Hg²⁺(aq)+ 2e^- Hg(s); E° = 0.85 V

Given:
Hg²⁺(aq) + 2e^- Hg(s) ; E° = 0.85 V
Li⁺(aq) + e^- Li(s) ; E° = -3.04 V
Br₂(l) + 2e^- 2Br^-(aq) ; E° = 1.07 V
Au⁺(aq) + e^- Au(s) ; E° = 1.69 V
Cl₂(g) + 2e^- 2Cl^-(aq) ; E° = 1.36 V
Which of the following species is the best reducing agent?

A) Hg
B) Li⁺
C) Au
D) Cl^-
E) Br^-