The Temperature Range at the Core-Mantle Boundary Is Estimated to Be

The temperature range at the core-mantle boundary is estimated to be between ____.

A) 2,500 to 5,000C
B) 5,000 to 6,500C
C) 7,000 to 8,500C
D) 8,500 to 10,000C
E) 10,000 to 11,500C