Don't be sad i just need the points?!
Differences: Medusa is a Gorgon (monster), while Perseus is some sort of a God.
Similarities: they are both characters in Greek Mythology
The commandment "All animals are equal" is not being followed in the first five chapters of the novel. One example is that Napoleon was treated better than all the other animals and constantly mistreated everyone. Another example is that the pigs relaxed and did nothing all day while the other animals had to work. The pigs were treated like royalty in comparison to the other animals.
GreekMythology.com or try wikepedia
The answer to your question is D.