Observations:
i) A reacts spontaneously with 1 mol/L BNO3, 1mol/L D(NO3)2 and diluted sulfuric acid. A does not react with 1 mol/L C(NO3)2.
ii) B does not react spontaneously with any of the 1 mol/L solutions above or with diluted sulfuric acid.
iii) C reacts spontaneously with diluted sulfuric...