‘Bhagavad Gita’ is described as Krishna's one-sided wisdom, despite the disastrous consequences; however, Sen believes that Arjuna's consistent and more sensible analysis of ‘faring well’ should also be placed in the context of today's violent world. Looking back Sen suggests that the interpretation of Bhagavad Gita needs to supplement Mahabharata's broader argumentation wisdom.
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.