In normal phase HPLC:
A. a hydrophilic stationary phase is combined with a non-polar mobile phase. B. a hydrophobic stationary phase is combined with a polar mobile phase. C. a hydrophobic stationary phase is combined with a non-polar mobile phase. D. a hydrophilic stationary phase is combined with a polar mobile phase.
A. a hydrophilic stationary phase is combined with a non-polar mobile phase. B. a hydrophobic stationary phase is combined with a polar mobile phase. C. a hydrophobic stationary phase is combined with a non-polar mobile phase. D. a hydrophilic stationary phase is combined with a polar mobile phase.