37. Which of the following gradient techniques are most appropriately used in the respective chromatographic methods: (i) gas chromatography (GC), (ii) high-performance liquid chromatography (HPLC), and (iii) supercritical fluid chromatography (SFC)?
(A) (i) Solvent composition gradient, (ii) Temperature gradient, and (iii) pH gradient
(B) (i) Temperature gradient, (ii) Solvent composition gradient, and (iii) Pressure gradient
(C) (i) Pressure gradient, (ii) pH gradient, and (iii) Temperature gradient
(D) (i) Flow-rate gradient, (ii) Temperature gradient, and (iii) Solvent composition gradient
(E) (i) Temperature gradient, (ii) Flow-rate gradient, and (iii) pH gradient