Assertion (A) Beryllium carbonate is kep...

Assertion (A) Beryllium carbonate is kept in the atomsphere of carbon dioxide.
Reason (R) Beryllium carbonate is unstable and decomposes to given beryllium oxide and carbon dioxide.

Both A and R are correct and R is the correct explanation of A .

Both A and R are correct but R is not the correct explanation of A .

Both A and R are not correct .

A is not correct but R is correct .

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