What Element Is Behaves as the Oxidizing Agent in the Following

What element is behaves as the oxidizing agent in the following equation and what element behaves as the reducing agent? Sn²⁺ + 2 Ag → Sn + 2 Ag⁺

A) The tin ion, Sn²⁺, is the oxidizing agent while silver, Ag, is the reducing agent.
B) The tin ion, Sn²⁺, is the reducing agent while silver, Ag, is the oxidizing agent.
C) The tin, Sn, is the reducing agent while silver ion, Ag⁺, is the oxidizing agent.
D) The tin, Sn, is the oxidizing agent while silver ion, Ag⁺, is the reducing agent.