What is the percentage of each salt in a 1.84 g mixture of CaCO₃ and MgCO₃ if on heating it gives 0.96 gram residue?
a) CaCO₃ = 39.13%, MgCO₃ = 60.87%
b) CaCO₃ = 60.87%, MgCO₃ = 39.13%
c) CaCO₃ = 30.43%, MgCO₃ = 69.57%
d) CaCO₃ = 69.57%, MgCO₃ = 30.43%