Read the paragraphs from the article. McClain, a major in the U. S. Army and a pilot, "wanted to be an astronaut from the time I was 3 or 4 years old," she said in a 2015 NASA video interview. "I remember telling my mom at that time, and I never deviated from what I wanted to be. Something about exploration has fascinated me from a young age."

McClain is currently aboard the ISS. Koch, an electrical engineer, will join her March 14 in what will be her first space flight, according to NASA. Space is just the latest exciting frontier Koch has conquered, as her work has taken her on expeditions to the South Pole and the Arctic.

How is the central idea developed in these two paragraphs?

A
It describes how the two astronauts feel about being the first women to take part in an all-female spacewalk.
B
It shows what the two astronauts are expected to do while they are conducting the all-female spacewalk.
C
It gives some background information about the two astronauts who are doing the all-female spacewalk.
D
It demonstrates that the two astronauts have had experience doing spacewalks before they will conduct the all-female spacewalk.