I think it's black asphalt, brown soil, beige sand, white paper. I'm sorry if I'm wrong.
Answer:
Tin(IV) Hydrogen Oxalate. Alias: Stannic Hydrogen Oxalate. Formula: Sn(HC2O4)4. Molar Mass: 474.8178. :: Chemistry Applications:: Chemical Elements, Periodic Table.
Explanation:
I belive its D if not right sorry.