Is the Aldehyde Oxidized or Reduced During the Following Reaction

Multiple Choice

Is the aldehyde oxidized or reduced during the following reaction, and how can you tell?

A) Neither.This is not an oxidation-reduction reaction.
B) The aldehyde is neither oxidized nor reduced because the number of hydrogens does not change.
C) The aldehyde is oxidized because it loses two hydrogens.
D) The aldehyde is reduced because it loses two hydrogens.
E) The aldehyde is oxidized because it gains an oxygen.