Read this excerpt from an argumentative essay:

Some say that the parks cost the American taxpayer too much money. Every year, millions of dollars are funneled into a national park system that is too large and extensive to maintain. Many arguments have been made for the money to be spent somewhere else, but let’s look at the reality. These parks may cost us money, but they also generate millions of dollars of income for the American people. Parks like Yellowstone National Park and the Grand Canyon are world-famous tourist destinations. Millions of visitors from within the United States and from foreign countries arrive at both locations every year to behold their wonders. These tourists spend money at the parks, at the businesses that are located near the parks, and along the way. Our national parks are important revenue-making entities.

Where in an argumentative essay does this excerpt belong?

A. in the opening
B. in the body, as a reason
C. in the body, addressing a counterclaim
D. in the closing