Which sentence from "A Modest Proposal" is the best example of satire?

Some persons of a desponding spirit are in great concern about that vast number of poor people, who are aged, diseased, or maimed.
Thus the squire will learn to be a good landlord, and grow popular among his tenants, the mother will have eight shillings neat profit, and be fit for work till she produces another child.
I have reckoned upon a medium, that a child just born will weigh 12 pounds, and in a solar year, if tolerably nursed, encreaseth to 28 pounds.
It is a melancholy object to those, who walk through this great town, or travel in the country, when they see the streets, the roads and cabbin-doors crowded with beggars of the female sex, followed by three, four, or six children.

The sentence "It is a melancholy object to those, who walk through this great town, or travel in the country, when they see the streets, the roads and cabbin-doors crowded with beggars of the female sex, followed by three, four, or six children" is the best example of satire in "A Modest Proposal."