A toxicology screen is set up using thin layer chromatographic plates.Four positive controls/standards are used with the following distance of migration from application point results: Std A = 8 cm; Std B = 15 cm; Std C = 22.The acetone solvent front moved 35 cm.After processing an unknown sample,a solute had a migration distance of 16 cm.What are the retention factors (Rf) of standards A,B,and C?
A) 8,15,22
B) 8,12,18
C) 4.4,2.3,1.5
D) 0.23,0.43,0.63
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