Solutions of the following peptides are prepared separately at a concentration of 1 mM. Among these four, which one has the highest A280?
1
Ser-Val-Trp-Asp-Phe-Gly-Tyr-Trp-Ala
2
Gln-Leu-Glu-Phe-Thr-Leu-Asp-Gly-Tyr
3
Met-Gly-Val-Ileu-Asp-Ser-Ala-Trp-His
4
His-Pro-Gly-Asp-Val-Ileu-Phe-Met-Leu