Here it became apparent that Mr. Pilkington was about to spring some carefully prepared witticism on the company, but for a moment he was too overcome by amusement to be able to utter it. After much choking, during which his various chins turned purple, he managed to get it out: "If you have your lower animals to contend with,” he said, "we have our lower classes!” This bon mot set the table in a roar; and Mr. Pilkington once again congratulated the pigs on the low rations, the long working hours, and the general absence of pampering which he had observed on Animal Farm.

–Animal Farm,
George Orwell

How does Orwell use satire in this passage?

to present the opposite of the normal order of things
to mimic the situation directly to produce a comical effect
to expose and condemn the corruption and character flaws of the pigs
to exaggerate Mr. Pilkington’s kindness toward the animals on the farm