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Which of the following factors govern solubility of two non-ferrous metals both inliquid state as well as in solid state?

1.  Crystal structure

2.  Relative size factor

3. Chemical-affinity factor

4.  Relative valence factor

Select the correct answer using the codes giver below:

A) 1, 2 and 3                     

B) 2, 3 and 4

C) 1 and 4            

D) 3 and 4