Running a TLC of Unknown Compound X using eluent hexane:ethyl acetate 4:1. The Rf of the unknown is too close to the baseline. What should I do?
A) Change the eluent to hexane:ethyl acetate 1:1
B) Lower the polarity of the eluent
C) Change the eluent system to 100% hexane
D) Run the TLC for a longer period of time.