An alkyl halide (A) of formula `C_(6)H_(11)Cl` on treatement with potassium tertiary butoxide gives two isomeric alkenes (B) and (C) `C_(6)H_(10)`. Both alkene on hydrogenation give methylcyclopentane. Predict the structure of (A), (B) and (C).

Answer

`(##ALN_CHM_C08_E01_144_A01##)`