Q: 69 (CDS-I/2004)

Regarding Earths composition, it would not be true to say which one of the following?
I. The crust is composed of heterogenous rocks.
II. The central nucleus is fluid.
III. Below the crust the material is wholly solid,
question_subject: 
History
question_year: 
2004
question_exam: 
CDS-I
stats: 
0,232,608,168,312,192,168