Which of the following factors govern solubility of two nonferrous metals both in liquid 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 given below
(a)1,2 and 3 (b) 2,3and 4
(c)1 and 4 (d) 1,2,3 and 4