Evidence to Support the Fact That Earth's Central Core Is

Multiple Choice

Evidence to support the fact that Earth's central core is solid can be attributed to

A) a decrease in S-wave velocity as they encounter and move through the inner core.
B) an increase in P-wave velocity as they encounter and move through the inner core.
C) a decrease in P-wave velocity as they encounter and move through the inner core.
D) an increase in S-wave velocity as they encounter and move through the inner core.