TOEFL Listening: ETS-TOEFL听力机经 - 189G3WFQAER4O649P$

What can be inferred about the woman when she says this? A. She realizes she is mistaken about the location of the Isthmus of Panama. B. She disagrees with the professor on the size of the Isthmus of Panama. C. She wants to demonstrate her knowledge of geography. D. She is confused by the claim that the professor is making.