TOEFL Listening: TPO-TOEFL阅读TPO - XR52221FM0P1IEJ9N$

The discussion in paragraph 3 answers all the following questions EXCEPT: A. Where is most of Earth's freshwater? B. What effect would a new ice age have on sea levels? C. What is the total amount of water in Earth's oceans? D. How much of Earth's water is in ice?