The diagrams illustrate the structures of three macromolecules P, Q and R. What are P, Q and R?
- AP: diamond, Q: silicon(IV) oxide, R: graphite
- BP: graphite, Q: diamond, R: silicon(IV) oxide
- CP: silicon(IV) oxide, Q: diamond, R: graphite
- DP: silicon(IV) oxide, Q: graphite, R: diamond