The difference between paper chromatography and thin layer chromatography is that:
a. paper chromatography uses capillary action, while tlc uses a silica gel.
b. paper chromatography uses capillary action, while tlc uses a stationary and mobile phase.
c. paper chromatography separates dyes based on mass, while tlc separates dyes based on charge or solubility.
d. paper chromatography separates an insoluble solid from a liquid, while tlc separates a solvent from its solution.