Four samples P, Q, R and S were analyzed using paper chromatography to check the presence of three different additives X, Y and Z. The final chromatograms are shown as Read the following statements carefully.

I) P contains three components out of which one is X

II) S contains only one component which is X.

III) Q contains two components which are X and Z.

IV) R contains two components out of which one is Y.

The correct statements are