Choose the INCORRECT Statement

Choose the INCORRECT statement.

A) Elemental silicon is produced by reduction of SiO₂ with coke.
B) In silica each silicon atom is bonded directly to four other silicon atoms.
C) Coke is made by heating coal in the absence of air.
D) Charcoal is made by heating wood in the absence of air.
E) Allotropes of carbon include diamond,graphite,fullerenes and nanotubes.