TOEFL Listening: ETS-TOEFL听力机经 - 64O93429M163XL8MP$

What does the professor imply when she says this : A. Pachacuti and Topa Inca Yupanqui had to overcome conditions to build their empire B. The Inca Empire did not actually change the city Topa Inca Yupanqui C. The history written by people might not be so what really happened that time D. The establishment of Pachacuti and Topa Inca Yupanqui was because of the condition in favour