Which is correct [MADT Bihar 1995]

1.	Which is correct [MADT Bihar 1995]
A.	Galena : \[M{{g}_{2}}C{{O}_{3}}\]
B.	Cassiterite : \[CaC{{O}_{3}}\,MgC{{O}_{3}}\]
C.	Dolomite : \[Sn{{O}_{2}}\]
D.	Magnesite : \[MgC{{O}_{3}}\]
Answer» E.

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Which is correct [MADT Bihar 1995]

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