A student took solution `X` in a test -tube and added a few drops of universal indicator to it. The solution turned blue. On addind another solution `Y` to this test tube drop wise, the colour of solution changed to green. When a yet another solution `Z` was added the solution turned yellow. Which of the following gives the correct conclusion of the student?

Options

A. `X` is acid `Y` is base `Z` is salt solution
B. `X` is base `Y` is acid `Z` is acid
C. `X` is acid `Y` is base `Z` is base
D. `X` is base `Y` is acid `Z` is sugar solution

Answer

D

Explanation

NA