$A$ chromatography column,packed with silica gel as the stationary phase,was used to separate a mixture of compounds consisting of $(A)$ benzanilide,$(B)$ aniline,and $(C)$ acetophenone. When the column is eluted with a mixture of solvents,hexane: ethyl acetate $(20: 80)$,the sequence of obtained compounds is:

• A
  $(B), (C)$ and $(A)$
• B
  $(C), (A)$ and $(B)$
• C
  $(A), (B)$ and $(C)$
• D
  $(B), (A)$ and $(C)$