An inorganic compound (A) made of two most occuring elements into the earth crust, having a polymeric tera-hederal network structure. With carbon, compound (A) produces a poisonous gas (B) which is the most stable diatomic molecule. Compounds (A) and (B) will be
A. `SiO_(2),CO_(2)`
B. `SiO_(2),CO`
C. `SiC,CO`
D. `SiO_(2),N_(2)`
