Identify the species oxidized, the species reduced, the oxidizing agent, and the reducing agent in the following electron transfer reaction: Cd²⁺ + 2Cr²⁺ → Cd + 2Cr³⁺
a) Species oxidized: Cd, Species reduced: Cr, Oxidizing agent: Cd, Reducing agent: Cr
b) Species oxidized: Cr, Species reduced: Cd, Oxidizing agent: Cr, Reducing agent: Cd
c) Species oxidized: Cd, Species reduced: Cr, Oxidizing agent: Cr, Reducing agent: Cd
d) Species oxidized: Cr, Species reduced: Cd, Oxidizing agent: Cd, Reducing agent: Cr