What fact from the passage best illustrates how DNA helps scientists identify ancient humans’ migration paths?

A
When the DNA of people on different continents matches, scientists know their ancestors’ paths crossed.

B
Specific segments of our genetic code are never altered from one generation to the next.

C
Human migratory patterns were often surprising, unpredictable, and far less direct than you might think.

D
Scientists can determine the route taken by a group’s ancestors by isolating certain strands of that group’s DNA.