73. Arrange the following alkyl halides in decreasing order of the rate of \( f \) - elimination reaction with alcohol \( KOH \)
A.
B \( CH _{3}- CH _{2}- Br \)
C. \( CH _{3}- CH _{2}- CH _{2}- Br \)
\( (1) A>B>C(2) C>B>A \) (B) \( B>C>A \times(1) A=C>B \)