Dyes are substances that have colour. The chromatogram for substance X and four dyes, 1, 2, 3 and 4, is displayed. Substance X has only two of the dyes 1, 2, 3 and 4 in it. Which pair of dyes is found in substance X?
- A1 and 2
- B1 and 4
- C2 and 3
- D3 and 4