You are provided with pink - coloured China rose solution in three test tubes.

In the first test tube, you add two drops of solution (A) and get dark pink colour.

In the second test tube you add two drops of solution (B) but there is no change in colour.

In the third test tube you add a few drops of solution (C) and get green colour.

Identify the nature of solutions (A), (B) and (C).