In our body, toxic chemicals are metabolized in the liver. One such process ... ...

In our body, toxic chemicals are metabolized in the liver. One such process involves the production of acetaldehyde from ethanol. This conversion is best described as:
(A) a dehydrogenation reaction.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in 22. Aldehydes and Ketones