Please explain why as well.

3 3 The blue tablet (unknown V) was crushed in a mortar and pestle and half of the resulting powder was transferred to a test tube. 2 mL of methanol and 1 mL of chloroform were added, and the suspension was mixed with a spatula. The suspension was filtered through a cotton plug and the filtrate collected in a clean, dry test tube. A small amount of the filtered sample was applied to the centre baseline of two TLC plates. One TLC plate was eluted in solvent system A (25:1:1 ethyl acetate / ethanol / acetic acid) and the other in solvent system B (7:2:1 ethyl acetate / methanol / ammonia). The developed TLC plates were dried and then viewed under a UV lamp. The results are shown here (solvent A on the left; solvent B on the right). Based on these results, which solvent system should be chosen for the rest of the analysis