Which of These Processes Can Occur at the Cathode in an Electrochemical

Which of these processes can occur at the cathode in an electrochemical cell?

A) 2Br ⁻ → Br₂+ 2e ⁻
B) Cr → Cr³⁺ + 3e ⁻
C) Cu → Cu²⁺ + 2e ⁻
D) Li⁺ + 1e ⁻ → Li
E) H₂ + 2OH ⁻ → 2H₂O + 2e ⁻