Two samples are spotted onto a thin-layer chromatography (TLC) plate, and the plate is developed and visualized. The result is that Sample A separates into three visible spots and Sample B only gives one visible spot. Based on the given information, select the statement that is NOT necessarily true.

A. Sample A contains at least three compounds
B. Sample B contains at least one compound
C. Sample A contains exactly three compounds
D. Sample A contains more than one compound