Match the items given in Column I with the type of solutions given in Column II.

Column I Column II
A. Soda water 1. A solution of gas in solid
B. Sugar solution 2. A solution of gas in liquid
C. German silver 3. A solution of solid in liquid
D. Hydrogen gas in palladium 4. A solution of solid in solid

Codes:

A B C D
1. 2 1 4 3
2. 1 2 3 4
3. 2 3 4 1
4. 4 1 3 2