Eveline let go of the opportunity to escape with Frank because she was stuck with the responsibility towards her family. The promises she had given to her mother were to keep her family together and never get separated. Even though she hated her father, she was worried about him. Her duty towards the family was much more important than escaping from the home, which prevented Eveline from leaving home
A compound (A) with molecular formula $C_4H_9I$ which is a primary alkyl halide, reacts with alcoholic KOH to give compound (B). Compound (B) reacts with HI to give (C) which is an isomer of (A). When (A) reacts with Na metal in the presence of dry ether, it gives a compound (D), C8H18, which is different from the compound formed when n-butyl iodide reacts with sodium. Write the structures of A, (B), (C) and (D) when (A) reacts with alcoholic KOH.